Home / 7,139.05-9,851.77-3,952.28

Finding the Fourth Proportional to 7,139.05, 9,851.77 and 3,952.28

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Solution

The fourth proportional to 7,139.05, 9,851.77 and 3,952.28 is: 5,454.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.05 : 9,851.77 = 3,952.28 : x
  2. Step 2: Convert to fraction form
    7,139.05/9,851.77 = 3,952.28/x
  3. Step 3: Cross multiply
    7,139.05x = 9,851.77 × 3,952.28
  4. Step 4: Simplify right side
    7,139.05x = 38,936,894.40
  5. Step 5: Solve for x
    x = 38,936,894.40/7,139.05
  6. Step 6: Final answer
    x = 5,454.07

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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.