Home / 5,815.29-8,722.89-1,432.79

Finding the Fourth Proportional to 5,815.29, 8,722.89 and 1,432.79

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Solution

The fourth proportional to 5,815.29, 8,722.89 and 1,432.79 is: 2,149.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,815.29 : 8,722.89 = 1,432.79 : x
  2. Step 2: Convert to fraction form
    5,815.29/8,722.89 = 1,432.79/x
  3. Step 3: Cross multiply
    5,815.29x = 8,722.89 × 1,432.79
  4. Step 4: Simplify right side
    5,815.29x = 12,498,058.66
  5. Step 5: Solve for x
    x = 12,498,058.66/5,815.29
  6. Step 6: Final answer
    x = 2,149.17

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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.