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Finding the Fourth Proportional to 5,276.97, 7,913.03 and 2,355.30

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Solution

The fourth proportional to 5,276.97, 7,913.03 and 2,355.30 is: 3,531.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,276.97 : 7,913.03 = 2,355.30 : x
  2. Step 2: Convert to fraction form
    5,276.97/7,913.03 = 2,355.30/x
  3. Step 3: Cross multiply
    5,276.97x = 7,913.03 × 2,355.30
  4. Step 4: Simplify right side
    5,276.97x = 18,637,547.78
  5. Step 5: Solve for x
    x = 18,637,547.78/5,276.97
  6. Step 6: Final answer
    x = 3,531.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.