Home / 7,171.28-9,873.48-6,119.12

Finding the Fourth Proportional to 7,171.28, 9,873.48 and 6,119.12

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Solution

The fourth proportional to 7,171.28, 9,873.48 and 6,119.12 is: 8,424.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,171.28 : 9,873.48 = 6,119.12 : x
  2. Step 2: Convert to fraction form
    7,171.28/9,873.48 = 6,119.12/x
  3. Step 3: Cross multiply
    7,171.28x = 9,873.48 × 6,119.12
  4. Step 4: Simplify right side
    7,171.28x = 60,417,008.94
  5. Step 5: Solve for x
    x = 60,417,008.94/7,171.28
  6. Step 6: Final answer
    x = 8,424.86

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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.