Home / 3,681.57-5,521.81-1,216.47

Finding the Fourth Proportional to 3,681.57, 5,521.81 and 1,216.47

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Solution

The fourth proportional to 3,681.57, 5,521.81 and 1,216.47 is: 1,824.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,681.57 : 5,521.81 = 1,216.47 : x
  2. Step 2: Convert to fraction form
    3,681.57/5,521.81 = 1,216.47/x
  3. Step 3: Cross multiply
    3,681.57x = 5,521.81 × 1,216.47
  4. Step 4: Simplify right side
    3,681.57x = 6,717,116.21
  5. Step 5: Solve for x
    x = 6,717,116.21/3,681.57
  6. Step 6: Final answer
    x = 1,824.52

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1.5x scale

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.