Home / 7,729.16-10,666.24-4,192.40

Finding the Fourth Proportional to 7,729.16, 10,666.24 and 4,192.40

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Solution

The fourth proportional to 7,729.16, 10,666.24 and 4,192.40 is: 5,785.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,729.16 : 10,666.24 = 4,192.40 : x
  2. Step 2: Convert to fraction form
    7,729.16/10,666.24 = 4,192.40/x
  3. Step 3: Cross multiply
    7,729.16x = 10,666.24 × 4,192.40
  4. Step 4: Simplify right side
    7,729.16x = 44,717,070.28
  5. Step 5: Solve for x
    x = 44,717,070.28/7,729.16
  6. Step 6: Final answer
    x = 5,785.50

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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.