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Finding the Fourth Proportional to 2,898.85, 4,000.39 and 1,572.55

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Solution

The fourth proportional to 2,898.85, 4,000.39 and 1,572.55 is: 2,170.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,898.85 : 4,000.39 = 1,572.55 : x
  2. Step 2: Convert to fraction form
    2,898.85/4,000.39 = 1,572.55/x
  3. Step 3: Cross multiply
    2,898.85x = 4,000.39 × 1,572.55
  4. Step 4: Simplify right side
    2,898.85x = 6,290,813.29
  5. Step 5: Solve for x
    x = 6,290,813.29/2,898.85
  6. Step 6: Final answer
    x = 2,170.11

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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.