Home / 9,108.18-13,640.40-5,200.74

Finding the Fourth Proportional to 9,108.18, 13,640.40 and 5,200.74

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Solution

The fourth proportional to 9,108.18, 13,640.40 and 5,200.74 is: 7,788.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,108.18 : 13,640.40 = 5,200.74 : x
  2. Step 2: Convert to fraction form
    9,108.18/13,640.40 = 5,200.74/x
  3. Step 3: Cross multiply
    9,108.18x = 13,640.40 × 5,200.74
  4. Step 4: Simplify right side
    9,108.18x = 70,940,173.90
  5. Step 5: Solve for x
    x = 70,940,173.90/9,108.18
  6. Step 6: Final answer
    x = 7,788.62

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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.