Home / 7,479.18-11,218.86-3,582.72

Finding the Fourth Proportional to 7,479.18, 11,218.86 and 3,582.72

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Solution

The fourth proportional to 7,479.18, 11,218.86 and 3,582.72 is: 5,374.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,479.18 : 11,218.86 = 3,582.72 : x
  2. Step 2: Convert to fraction form
    7,479.18/11,218.86 = 3,582.72/x
  3. Step 3: Cross multiply
    7,479.18x = 11,218.86 × 3,582.72
  4. Step 4: Simplify right side
    7,479.18x = 40,194,034.10
  5. Step 5: Solve for x
    x = 40,194,034.10/7,479.18
  6. Step 6: Final answer
    x = 5,374.12

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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.