Home / 9,406.72-12,981.19-5,158.02

Finding the Fourth Proportional to 9,406.72, 12,981.19 and 5,158.02

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Solution

The fourth proportional to 9,406.72, 12,981.19 and 5,158.02 is: 7,118.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,406.72 : 12,981.19 = 5,158.02 : x
  2. Step 2: Convert to fraction form
    9,406.72/12,981.19 = 5,158.02/x
  3. Step 3: Cross multiply
    9,406.72x = 12,981.19 × 5,158.02
  4. Step 4: Simplify right side
    9,406.72x = 66,957,237.64
  5. Step 5: Solve for x
    x = 66,957,237.64/9,406.72
  6. Step 6: Final answer
    x = 7,118.02

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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.