Home / 6,287.38-9,431.12-1,905.18

Finding the Fourth Proportional to 6,287.38, 9,431.12 and 1,905.18

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Solution

The fourth proportional to 6,287.38, 9,431.12 and 1,905.18 is: 2,857.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,287.38 : 9,431.12 = 1,905.18 : x
  2. Step 2: Convert to fraction form
    6,287.38/9,431.12 = 1,905.18/x
  3. Step 3: Cross multiply
    6,287.38x = 9,431.12 × 1,905.18
  4. Step 4: Simplify right side
    6,287.38x = 17,967,981.20
  5. Step 5: Solve for x
    x = 17,967,981.20/6,287.38
  6. Step 6: Final answer
    x = 2,857.79

Related Problems

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Half scale
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Double scale
Find fourth proportional to 6,288.38, 9,432.62 and 1,906.18
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.