Home / 9,158.51-12,639.42-5,125.74

Finding the Fourth Proportional to 9,158.51, 12,639.42 and 5,125.74

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Solution

The fourth proportional to 9,158.51, 12,639.42 and 5,125.74 is: 7,073.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,158.51 : 12,639.42 = 5,125.74 : x
  2. Step 2: Convert to fraction form
    9,158.51/12,639.42 = 5,125.74/x
  3. Step 3: Cross multiply
    9,158.51x = 12,639.42 × 5,125.74
  4. Step 4: Simplify right side
    9,158.51x = 64,786,380.67
  5. Step 5: Solve for x
    x = 64,786,380.67/9,158.51
  6. Step 6: Final answer
    x = 7,073.90

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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.