Home / 9,119.79-12,570.17-7,228.04

Finding the Fourth Proportional to 9,119.79, 12,570.17 and 7,228.04

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Solution

The fourth proportional to 9,119.79, 12,570.17 and 7,228.04 is: 9,962.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,119.79 : 12,570.17 = 7,228.04 : x
  2. Step 2: Convert to fraction form
    9,119.79/12,570.17 = 7,228.04/x
  3. Step 3: Cross multiply
    9,119.79x = 12,570.17 × 7,228.04
  4. Step 4: Simplify right side
    9,119.79x = 90,857,592.58
  5. Step 5: Solve for x
    x = 90,857,592.58/9,119.79
  6. Step 6: Final answer
    x = 9,962.68

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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.