Home / 8,157.60-11,261.34-6,141.78

Finding the Fourth Proportional to 8,157.60, 11,261.34 and 6,141.78

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Solution

The fourth proportional to 8,157.60, 11,261.34 and 6,141.78 is: 8,478.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,157.60 : 11,261.34 = 6,141.78 : x
  2. Step 2: Convert to fraction form
    8,157.60/11,261.34 = 6,141.78/x
  3. Step 3: Cross multiply
    8,157.60x = 11,261.34 × 6,141.78
  4. Step 4: Simplify right side
    8,157.60x = 69,164,672.79
  5. Step 5: Solve for x
    x = 69,164,672.79/8,157.60
  6. Step 6: Final answer
    x = 8,478.56

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Half scale
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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.