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Finding the Fourth Proportional to 8,879.12, 12,252.78 and 5,099.63

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Solution

The fourth proportional to 8,879.12, 12,252.78 and 5,099.63 is: 7,037.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,879.12 : 12,252.78 = 5,099.63 : x
  2. Step 2: Convert to fraction form
    8,879.12/12,252.78 = 5,099.63/x
  3. Step 3: Cross multiply
    8,879.12x = 12,252.78 × 5,099.63
  4. Step 4: Simplify right side
    8,879.12x = 62,484,557.71
  5. Step 5: Solve for x
    x = 62,484,557.71/8,879.12
  6. Step 6: Final answer
    x = 7,037.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.