Home / 3,681.80-5,521.52-1,216.16

Finding the Fourth Proportional to 3,681.80, 5,521.52 and 1,216.16

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Solution

The fourth proportional to 3,681.80, 5,521.52 and 1,216.16 is: 1,823.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,681.80 : 5,521.52 = 1,216.16 : x
  2. Step 2: Convert to fraction form
    3,681.80/5,521.52 = 1,216.16/x
  3. Step 3: Cross multiply
    3,681.80x = 5,521.52 × 1,216.16
  4. Step 4: Simplify right side
    3,681.80x = 6,715,024.16
  5. Step 5: Solve for x
    x = 6,715,024.16/3,681.80
  6. Step 6: Final answer
    x = 1,823.85

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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.