Home / 8,901.90-12,284.22-5,122.47

Finding the Fourth Proportional to 8,901.90, 12,284.22 and 5,122.47

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Solution

The fourth proportional to 8,901.90, 12,284.22 and 5,122.47 is: 7,068.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,901.90 : 12,284.22 = 5,122.47 : x
  2. Step 2: Convert to fraction form
    8,901.90/12,284.22 = 5,122.47/x
  3. Step 3: Cross multiply
    8,901.90x = 12,284.22 × 5,122.47
  4. Step 4: Simplify right side
    8,901.90x = 62,925,548.42
  5. Step 5: Solve for x
    x = 62,925,548.42/8,901.90
  6. Step 6: Final answer
    x = 7,068.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.