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Finding the Fourth Proportional to 4,718.53, 7,079.71 and 2,379.20

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Solution

The fourth proportional to 4,718.53, 7,079.71 and 2,379.20 is: 3,569.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,718.53 : 7,079.71 = 2,379.20 : x
  2. Step 2: Convert to fraction form
    4,718.53/7,079.71 = 2,379.20/x
  3. Step 3: Cross multiply
    4,718.53x = 7,079.71 × 2,379.20
  4. Step 4: Simplify right side
    4,718.53x = 16,844,034.14
  5. Step 5: Solve for x
    x = 16,844,034.14/4,718.53
  6. Step 6: Final answer
    x = 3,569.77

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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.