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Finding the Fourth Proportional to 2,898.87, 4,000.40 and 1,572.56

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Solution

The fourth proportional to 2,898.87, 4,000.40 and 1,572.56 is: 2,170.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,898.87 : 4,000.40 = 1,572.56 : x
  2. Step 2: Convert to fraction form
    2,898.87/4,000.40 = 1,572.56/x
  3. Step 3: Cross multiply
    2,898.87x = 4,000.40 × 1,572.56
  4. Step 4: Simplify right side
    2,898.87x = 6,290,862.06
  5. Step 5: Solve for x
    x = 6,290,862.06/2,898.87
  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.