Home / 8,451.28-12,678.42-2,903.18

Finding the Fourth Proportional to 8,451.28, 12,678.42 and 2,903.18

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Solution

The fourth proportional to 8,451.28, 12,678.42 and 2,903.18 is: 4,355.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,451.28 : 12,678.42 = 2,903.18 : x
  2. Step 2: Convert to fraction form
    8,451.28/12,678.42 = 2,903.18/x
  3. Step 3: Cross multiply
    8,451.28x = 12,678.42 × 2,903.18
  4. Step 4: Simplify right side
    8,451.28x = 36,807,735.38
  5. Step 5: Solve for x
    x = 36,807,735.38/8,451.28
  6. Step 6: Final answer
    x = 4,355.29

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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.