Home / 7,729.31-10,666.39-4,192.53

Finding the Fourth Proportional to 7,729.31, 10,666.39 and 4,192.53

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Solution

The fourth proportional to 7,729.31, 10,666.39 and 4,192.53 is: 5,785.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,729.31 : 10,666.39 = 4,192.53 : x
  2. Step 2: Convert to fraction form
    7,729.31/10,666.39 = 4,192.53/x
  3. Step 3: Cross multiply
    7,729.31x = 10,666.39 × 4,192.53
  4. Step 4: Simplify right side
    7,729.31x = 44,719,160.07
  5. Step 5: Solve for x
    x = 44,719,160.07/7,729.31
  6. Step 6: Final answer
    x = 5,785.66

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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.