Home / 7,431.20-10,255.12-4,287.36

Finding the Fourth Proportional to 7,431.20, 10,255.12 and 4,287.36

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Solution

The fourth proportional to 7,431.20, 10,255.12 and 4,287.36 is: 5,916.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,431.20 : 10,255.12 = 4,287.36 : x
  2. Step 2: Convert to fraction form
    7,431.20/10,255.12 = 4,287.36/x
  3. Step 3: Cross multiply
    7,431.20x = 10,255.12 × 4,287.36
  4. Step 4: Simplify right side
    7,431.20x = 43,967,391.28
  5. Step 5: Solve for x
    x = 43,967,391.28/7,431.20
  6. Step 6: Final answer
    x = 5,916.59

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Half scale
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Double scale
Find fourth proportional to 7,432.20, 10,256.50 and 4,288.36
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.