Home / 8,126.28-12,191.47-3,746.81

Finding the Fourth Proportional to 8,126.28, 12,191.47 and 3,746.81

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Solution

The fourth proportional to 8,126.28, 12,191.47 and 3,746.81 is: 5,621.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,126.28 : 12,191.47 = 3,746.81 : x
  2. Step 2: Convert to fraction form
    8,126.28/12,191.47 = 3,746.81/x
  3. Step 3: Cross multiply
    8,126.28x = 12,191.47 × 3,746.81
  4. Step 4: Simplify right side
    8,126.28x = 45,679,121.71
  5. Step 5: Solve for x
    x = 45,679,121.71/8,126.28
  6. Step 6: Final answer
    x = 5,621.16

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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.