Home / 8,625.52-12,920.36-5,490.01

Finding the Fourth Proportional to 8,625.52, 12,920.36 and 5,490.01

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Solution

The fourth proportional to 8,625.52, 12,920.36 and 5,490.01 is: 8,223.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,625.52 : 12,920.36 = 5,490.01 : x
  2. Step 2: Convert to fraction form
    8,625.52/12,920.36 = 5,490.01/x
  3. Step 3: Cross multiply
    8,625.52x = 12,920.36 × 5,490.01
  4. Step 4: Simplify right side
    8,625.52x = 70,932,905.60
  5. Step 5: Solve for x
    x = 70,932,905.60/8,625.52
  6. Step 6: Final answer
    x = 8,223.61

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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.