Home / 7,139.02-9,851.69-3,952.13

Finding the Fourth Proportional to 7,139.02, 9,851.69 and 3,952.13

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Solution

The fourth proportional to 7,139.02, 9,851.69 and 3,952.13 is: 5,453.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.02 : 9,851.69 = 3,952.13 : x
  2. Step 2: Convert to fraction form
    7,139.02/9,851.69 = 3,952.13/x
  3. Step 3: Cross multiply
    7,139.02x = 9,851.69 × 3,952.13
  4. Step 4: Simplify right side
    7,139.02x = 38,935,159.60
  5. Step 5: Solve for x
    x = 38,935,159.60/7,139.02
  6. Step 6: Final answer
    x = 5,453.85

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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.