Home / 1,621.45-2,432.51-525.79

Finding the Fourth Proportional to 1,621.45, 2,432.51 and 525.79

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Solution

The fourth proportional to 1,621.45, 2,432.51 and 525.79 is: 788.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.45 : 2,432.51 = 525.79 : x
  2. Step 2: Convert to fraction form
    1,621.45/2,432.51 = 525.79/x
  3. Step 3: Cross multiply
    1,621.45x = 2,432.51 × 525.79
  4. Step 4: Simplify right side
    1,621.45x = 1,278,974.64
  5. Step 5: Solve for x
    x = 1,278,974.64/1,621.45
  6. Step 6: Final answer
    x = 788.79

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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.