Home / 1,621.80-2,432.82-526.34

Finding the Fourth Proportional to 1,621.80, 2,432.82 and 526.34

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Solution

The fourth proportional to 1,621.80, 2,432.82 and 526.34 is: 789.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.80 : 2,432.82 = 526.34 : x
  2. Step 2: Convert to fraction form
    1,621.80/2,432.82 = 526.34/x
  3. Step 3: Cross multiply
    1,621.80x = 2,432.82 × 526.34
  4. Step 4: Simplify right side
    1,621.80x = 1,280,490.48
  5. Step 5: Solve for x
    x = 1,280,490.48/1,621.80
  6. Step 6: Final answer
    x = 789.55

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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.