Home / 8,478.15-11,704.55-5,649.36

Finding the Fourth Proportional to 8,478.15, 11,704.55 and 5,649.36

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Solution

The fourth proportional to 8,478.15, 11,704.55 and 5,649.36 is: 7,799.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,478.15 : 11,704.55 = 5,649.36 : x
  2. Step 2: Convert to fraction form
    8,478.15/11,704.55 = 5,649.36/x
  3. Step 3: Cross multiply
    8,478.15x = 11,704.55 × 5,649.36
  4. Step 4: Simplify right side
    8,478.15x = 66,123,188.34
  5. Step 5: Solve for x
    x = 66,123,188.34/8,478.15
  6. Step 6: Final answer
    x = 7,799.25

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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.