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Finding the Fourth Proportional to 8,129.69, 12,185.12 and 3,737.93

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Solution

The fourth proportional to 8,129.69, 12,185.12 and 3,737.93 is: 5,602.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,129.69 : 12,185.12 = 3,737.93 : x
  2. Step 2: Convert to fraction form
    8,129.69/12,185.12 = 3,737.93/x
  3. Step 3: Cross multiply
    8,129.69x = 12,185.12 × 3,737.93
  4. Step 4: Simplify right side
    8,129.69x = 45,547,045.99
  5. Step 5: Solve for x
    x = 45,547,045.99/8,129.69
  6. Step 6: Final answer
    x = 5,602.56

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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.