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Finding the Fourth Proportional to 8,451.54, 12,678.17 and 2,904.16

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Solution

The fourth proportional to 8,451.54, 12,678.17 and 2,904.16 is: 4,356.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,451.54 : 12,678.17 = 2,904.16 : x
  2. Step 2: Convert to fraction form
    8,451.54/12,678.17 = 2,904.16/x
  3. Step 3: Cross multiply
    8,451.54x = 12,678.17 × 2,904.16
  4. Step 4: Simplify right side
    8,451.54x = 36,819,434.19
  5. Step 5: Solve for x
    x = 36,819,434.19/8,451.54
  6. Step 6: Final answer
    x = 4,356.54

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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.