Home / 9,122.90-12,590.10-5,144.22

Finding the Fourth Proportional to 9,122.90, 12,590.10 and 5,144.22

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Solution

The fourth proportional to 9,122.90, 12,590.10 and 5,144.22 is: 7,099.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,122.90 : 12,590.10 = 5,144.22 : x
  2. Step 2: Convert to fraction form
    9,122.90/12,590.10 = 5,144.22/x
  3. Step 3: Cross multiply
    9,122.90x = 12,590.10 × 5,144.22
  4. Step 4: Simplify right side
    9,122.90x = 64,766,244.22
  5. Step 5: Solve for x
    x = 64,766,244.22/9,122.90
  6. Step 6: Final answer
    x = 7,099.31

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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.