Home / 9,407.95-12,982.68-5,158.79

Finding the Fourth Proportional to 9,407.95, 12,982.68 and 5,158.79

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Solution

The fourth proportional to 9,407.95, 12,982.68 and 5,158.79 is: 7,118.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,407.95 : 12,982.68 = 5,158.79 : x
  2. Step 2: Convert to fraction form
    9,407.95/12,982.68 = 5,158.79/x
  3. Step 3: Cross multiply
    9,407.95x = 12,982.68 × 5,158.79
  4. Step 4: Simplify right side
    9,407.95x = 66,974,903.53
  5. Step 5: Solve for x
    x = 66,974,903.53/9,407.95
  6. Step 6: Final answer
    x = 7,118.97

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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.