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Finding the Fourth Proportional to 6,917.28, 9,542.88 and 4,618.40

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Solution

The fourth proportional to 6,917.28, 9,542.88 and 4,618.40 is: 6,371.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,917.28 : 9,542.88 = 4,618.40 : x
  2. Step 2: Convert to fraction form
    6,917.28/9,542.88 = 4,618.40/x
  3. Step 3: Cross multiply
    6,917.28x = 9,542.88 × 4,618.40
  4. Step 4: Simplify right side
    6,917.28x = 44,072,836.99
  5. Step 5: Solve for x
    x = 44,072,836.99/6,917.28
  6. Step 6: Final answer
    x = 6,371.41

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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.