Home / 3,656.39-5,479.04-1,680.95

Finding the Fourth Proportional to 3,656.39, 5,479.04 and 1,680.95

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Solution

The fourth proportional to 3,656.39, 5,479.04 and 1,680.95 is: 2,518.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,656.39 : 5,479.04 = 1,680.95 : x
  2. Step 2: Convert to fraction form
    3,656.39/5,479.04 = 1,680.95/x
  3. Step 3: Cross multiply
    3,656.39x = 5,479.04 × 1,680.95
  4. Step 4: Simplify right side
    3,656.39x = 9,210,010.19
  5. Step 5: Solve for x
    x = 9,210,010.19/3,656.39
  6. Step 6: Final answer
    x = 2,518.88

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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.