Home / 3,655.65-5,478.93-1,679.18

Finding the Fourth Proportional to 3,655.65, 5,478.93 and 1,679.18

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Solution

The fourth proportional to 3,655.65, 5,478.93 and 1,679.18 is: 2,516.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,655.65 : 5,478.93 = 1,679.18 : x
  2. Step 2: Convert to fraction form
    3,655.65/5,478.93 = 1,679.18/x
  3. Step 3: Cross multiply
    3,655.65x = 5,478.93 × 1,679.18
  4. Step 4: Simplify right side
    3,655.65x = 9,200,127.57
  5. Step 5: Solve for x
    x = 9,200,127.57/3,655.65
  6. Step 6: Final answer
    x = 2,516.69

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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.