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Finding the Fourth Proportional to 8,345.77, 12,518.34 and 8,136.52

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Solution

The fourth proportional to 8,345.77, 12,518.34 and 8,136.52 is: 12,204.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,345.77 : 12,518.34 = 8,136.52 : x
  2. Step 2: Convert to fraction form
    8,345.77/12,518.34 = 8,136.52/x
  3. Step 3: Cross multiply
    8,345.77x = 12,518.34 × 8,136.52
  4. Step 4: Simplify right side
    8,345.77x = 101,855,723.78
  5. Step 5: Solve for x
    x = 101,855,723.78/8,345.77
  6. Step 6: Final answer
    x = 12,204.47

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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.