Home / 8,898.53-12,279.62-5,122.90

Finding the Fourth Proportional to 8,898.53, 12,279.62 and 5,122.90

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Solution

The fourth proportional to 8,898.53, 12,279.62 and 5,122.90 is: 7,069.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,898.53 : 12,279.62 = 5,122.90 : x
  2. Step 2: Convert to fraction form
    8,898.53/12,279.62 = 5,122.90/x
  3. Step 3: Cross multiply
    8,898.53x = 12,279.62 × 5,122.90
  4. Step 4: Simplify right side
    8,898.53x = 62,907,239.68
  5. Step 5: Solve for x
    x = 62,907,239.68/8,898.53
  6. Step 6: Final answer
    x = 7,069.40

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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.