Home / 9,327.28-12,871.86-5,078.60

Finding the Fourth Proportional to 9,327.28, 12,871.86 and 5,078.60

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Solution

The fourth proportional to 9,327.28, 12,871.86 and 5,078.60 is: 7,008.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,327.28 : 12,871.86 = 5,078.60 : x
  2. Step 2: Convert to fraction form
    9,327.28/12,871.86 = 5,078.60/x
  3. Step 3: Cross multiply
    9,327.28x = 12,871.86 × 5,078.60
  4. Step 4: Simplify right side
    9,327.28x = 65,371,028.20
  5. Step 5: Solve for x
    x = 65,371,028.20/9,327.28
  6. Step 6: Final answer
    x = 7,008.58

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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.