Home / 7,130.26-9,839.79-3,943.78

Finding the Fourth Proportional to 7,130.26, 9,839.79 and 3,943.78

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Solution

The fourth proportional to 7,130.26, 9,839.79 and 3,943.78 is: 5,442.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,130.26 : 9,839.79 = 3,943.78 : x
  2. Step 2: Convert to fraction form
    7,130.26/9,839.79 = 3,943.78/x
  3. Step 3: Cross multiply
    7,130.26x = 9,839.79 × 3,943.78
  4. Step 4: Simplify right side
    7,130.26x = 38,805,967.01
  5. Step 5: Solve for x
    x = 38,805,967.01/7,130.26
  6. Step 6: Final answer
    x = 5,442.43

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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.