Home / 9,327.10-12,871.40-5,135.35

Finding the Fourth Proportional to 9,327.10, 12,871.40 and 5,135.35

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Solution

The fourth proportional to 9,327.10, 12,871.40 and 5,135.35 is: 7,086.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,327.10 : 12,871.40 = 5,135.35 : x
  2. Step 2: Convert to fraction form
    9,327.10/12,871.40 = 5,135.35/x
  3. Step 3: Cross multiply
    9,327.10x = 12,871.40 × 5,135.35
  4. Step 4: Simplify right side
    9,327.10x = 66,099,092.47
  5. Step 5: Solve for x
    x = 66,099,092.47/9,327.10
  6. Step 6: Final answer
    x = 7,086.78

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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.