Home / 9,327.14-12,871.66-5,135.40

Finding the Fourth Proportional to 9,327.14, 12,871.66 and 5,135.40

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Solution

The fourth proportional to 9,327.14, 12,871.66 and 5,135.40 is: 7,086.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,327.14 : 12,871.66 = 5,135.40 : x
  2. Step 2: Convert to fraction form
    9,327.14/12,871.66 = 5,135.40/x
  3. Step 3: Cross multiply
    9,327.14x = 12,871.66 × 5,135.40
  4. Step 4: Simplify right side
    9,327.14x = 66,101,122.76
  5. Step 5: Solve for x
    x = 66,101,122.76/9,327.14
  6. Step 6: Final answer
    x = 7,086.97

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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.