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Finding the Fourth Proportional to 2,590.86, 3,575.36 and 1,411.92

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Solution

The fourth proportional to 2,590.86, 3,575.36 and 1,411.92 is: 1,948.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,590.86 : 3,575.36 = 1,411.92 : x
  2. Step 2: Convert to fraction form
    2,590.86/3,575.36 = 1,411.92/x
  3. Step 3: Cross multiply
    2,590.86x = 3,575.36 × 1,411.92
  4. Step 4: Simplify right side
    2,590.86x = 5,048,122.29
  5. Step 5: Solve for x
    x = 5,048,122.29/2,590.86
  6. Step 6: Final answer
    x = 1,948.43

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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.