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Finding the Fourth Proportional to 9,039.65, 13,559.47 and 2,799.71

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Solution

The fourth proportional to 9,039.65, 13,559.47 and 2,799.71 is: 4,199.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,039.65 : 13,559.47 = 2,799.71 : x
  2. Step 2: Convert to fraction form
    9,039.65/13,559.47 = 2,799.71/x
  3. Step 3: Cross multiply
    9,039.65x = 13,559.47 × 2,799.71
  4. Step 4: Simplify right side
    9,039.65x = 37,962,569.76
  5. Step 5: Solve for x
    x = 37,962,569.76/9,039.65
  6. Step 6: Final answer
    x = 4,199.56

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Double scale
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Similar ratio
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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.