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Finding the Fourth Proportional to 2,545.52, 3,818.88 and 902.21

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Solution

The fourth proportional to 2,545.52, 3,818.88 and 902.21 is: 1,353.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,545.52 : 3,818.88 = 902.21 : x
  2. Step 2: Convert to fraction form
    2,545.52/3,818.88 = 902.21/x
  3. Step 3: Cross multiply
    2,545.52x = 3,818.88 × 902.21
  4. Step 4: Simplify right side
    2,545.52x = 3,445,412.63
  5. Step 5: Solve for x
    x = 3,445,412.63/2,545.52
  6. Step 6: Final answer
    x = 1,353.52

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1.5x scale

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.