Home / 6,913.80-9,541.17-3,929.40

Finding the Fourth Proportional to 6,913.80, 9,541.17 and 3,929.40

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Solution

The fourth proportional to 6,913.80, 9,541.17 and 3,929.40 is: 5,422.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,913.80 : 9,541.17 = 3,929.40 : x
  2. Step 2: Convert to fraction form
    6,913.80/9,541.17 = 3,929.40/x
  3. Step 3: Cross multiply
    6,913.80x = 9,541.17 × 3,929.40
  4. Step 4: Simplify right side
    6,913.80x = 37,491,073.40
  5. Step 5: Solve for x
    x = 37,491,073.40/6,913.80
  6. Step 6: Final answer
    x = 5,422.64

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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.