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Finding the Fourth Proportional to 8,298.66, 11,449.71 and 4,939.79

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Solution

The fourth proportional to 8,298.66, 11,449.71 and 4,939.79 is: 6,815.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,298.66 : 11,449.71 = 4,939.79 : x
  2. Step 2: Convert to fraction form
    8,298.66/11,449.71 = 4,939.79/x
  3. Step 3: Cross multiply
    8,298.66x = 11,449.71 × 4,939.79
  4. Step 4: Simplify right side
    8,298.66x = 56,559,105.71
  5. Step 5: Solve for x
    x = 56,559,105.71/8,298.66
  6. Step 6: Final answer
    x = 6,815.45

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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.