Home / 1,621.68-2,432.28-525.92

Finding the Fourth Proportional to 1,621.68, 2,432.28 and 525.92

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Solution

The fourth proportional to 1,621.68, 2,432.28 and 525.92 is: 788.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.68 : 2,432.28 = 525.92 : x
  2. Step 2: Convert to fraction form
    1,621.68/2,432.28 = 525.92/x
  3. Step 3: Cross multiply
    1,621.68x = 2,432.28 × 525.92
  4. Step 4: Simplify right side
    1,621.68x = 1,279,184.70
  5. Step 5: Solve for x
    x = 1,279,184.70/1,621.68
  6. Step 6: Final answer
    x = 788.80

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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.