Home / 8,125.77-12,188.66-2,931.65

Finding the Fourth Proportional to 8,125.77, 12,188.66 and 2,931.65

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Solution

The fourth proportional to 8,125.77, 12,188.66 and 2,931.65 is: 4,397.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,125.77 : 12,188.66 = 2,931.65 : x
  2. Step 2: Convert to fraction form
    8,125.77/12,188.66 = 2,931.65/x
  3. Step 3: Cross multiply
    8,125.77x = 12,188.66 × 2,931.65
  4. Step 4: Simplify right side
    8,125.77x = 35,732,885.09
  5. Step 5: Solve for x
    x = 35,732,885.09/8,125.77
  6. Step 6: Final answer
    x = 4,397.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.