Home / 5,280.59-7,920.89-1,583.21

Finding the Fourth Proportional to 5,280.59, 7,920.89 and 1,583.21

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Solution

The fourth proportional to 5,280.59, 7,920.89 and 1,583.21 is: 2,374.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.59 : 7,920.89 = 1,583.21 : x
  2. Step 2: Convert to fraction form
    5,280.59/7,920.89 = 1,583.21/x
  3. Step 3: Cross multiply
    5,280.59x = 7,920.89 × 1,583.21
  4. Step 4: Simplify right side
    5,280.59x = 12,540,432.26
  5. Step 5: Solve for x
    x = 12,540,432.26/5,280.59
  6. Step 6: Final answer
    x = 2,374.82

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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.