Home / 5,120.41-7,680.65-1,562.58

Finding the Fourth Proportional to 5,120.41, 7,680.65 and 1,562.58

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Solution

The fourth proportional to 5,120.41, 7,680.65 and 1,562.58 is: 2,343.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120.41 : 7,680.65 = 1,562.58 : x
  2. Step 2: Convert to fraction form
    5,120.41/7,680.65 = 1,562.58/x
  3. Step 3: Cross multiply
    5,120.41x = 7,680.65 × 1,562.58
  4. Step 4: Simplify right side
    5,120.41x = 12,001,630.08
  5. Step 5: Solve for x
    x = 12,001,630.08/5,120.41
  6. Step 6: Final answer
    x = 2,343.88

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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.