Home / 7,840.89-10,820.39-4,304.12

Finding the Fourth Proportional to 7,840.89, 10,820.39 and 4,304.12

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Solution

The fourth proportional to 7,840.89, 10,820.39 and 4,304.12 is: 5,939.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,840.89 : 10,820.39 = 4,304.12 : x
  2. Step 2: Convert to fraction form
    7,840.89/10,820.39 = 4,304.12/x
  3. Step 3: Cross multiply
    7,840.89x = 10,820.39 × 4,304.12
  4. Step 4: Simplify right side
    7,840.89x = 46,572,181.38
  5. Step 5: Solve for x
    x = 46,572,181.38/7,840.89
  6. Step 6: Final answer
    x = 5,939.65

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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.