Home / 8,135.60-11,220.31-6,454.35

Finding the Fourth Proportional to 8,135.60, 11,220.31 and 6,454.35

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Solution

The fourth proportional to 8,135.60, 11,220.31 and 6,454.35 is: 8,901.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,135.60 : 11,220.31 = 6,454.35 : x
  2. Step 2: Convert to fraction form
    8,135.60/11,220.31 = 6,454.35/x
  3. Step 3: Cross multiply
    8,135.60x = 11,220.31 × 6,454.35
  4. Step 4: Simplify right side
    8,135.60x = 72,419,807.85
  5. Step 5: Solve for x
    x = 72,419,807.85/8,135.60
  6. Step 6: Final answer
    x = 8,901.59

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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.