Home / 9,360.50-12,917.49-5,168.78

Finding the Fourth Proportional to 9,360.50, 12,917.49 and 5,168.78

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Solution

The fourth proportional to 9,360.50, 12,917.49 and 5,168.78 is: 7,132.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,360.50 : 12,917.49 = 5,168.78 : x
  2. Step 2: Convert to fraction form
    9,360.50/12,917.49 = 5,168.78/x
  3. Step 3: Cross multiply
    9,360.50x = 12,917.49 × 5,168.78
  4. Step 4: Simplify right side
    9,360.50x = 66,767,663.96
  5. Step 5: Solve for x
    x = 66,767,663.96/9,360.50
  6. Step 6: Final answer
    x = 7,132.92

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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.