Home / 1,621.45-2,432.26-525.90

Finding the Fourth Proportional to 1,621.45, 2,432.26 and 525.90

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Solution

The fourth proportional to 1,621.45, 2,432.26 and 525.90 is: 788.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.45 : 2,432.26 = 525.90 : x
  2. Step 2: Convert to fraction form
    1,621.45/2,432.26 = 525.90/x
  3. Step 3: Cross multiply
    1,621.45x = 2,432.26 × 525.90
  4. Step 4: Simplify right side
    1,621.45x = 1,279,125.53
  5. Step 5: Solve for x
    x = 1,279,125.53/1,621.45
  6. Step 6: Final answer
    x = 788.88

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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.