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Finding the Fourth Proportional to 2,898.97, 4,000.61 and 1,572.68

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Solution

The fourth proportional to 2,898.97, 4,000.61 and 1,572.68 is: 2,170.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,898.97 : 4,000.61 = 1,572.68 : x
  2. Step 2: Convert to fraction form
    2,898.97/4,000.61 = 1,572.68/x
  3. Step 3: Cross multiply
    2,898.97x = 4,000.61 × 1,572.68
  4. Step 4: Simplify right side
    2,898.97x = 6,291,679.33
  5. Step 5: Solve for x
    x = 6,291,679.33/2,898.97
  6. Step 6: Final answer
    x = 2,170.32

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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.