Home / 3,681.47-5,520.39-1,215.32

Finding the Fourth Proportional to 3,681.47, 5,520.39 and 1,215.32

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Solution

The fourth proportional to 3,681.47, 5,520.39 and 1,215.32 is: 1,822.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,681.47 : 5,520.39 = 1,215.32 : x
  2. Step 2: Convert to fraction form
    3,681.47/5,520.39 = 1,215.32/x
  3. Step 3: Cross multiply
    3,681.47x = 5,520.39 × 1,215.32
  4. Step 4: Simplify right side
    3,681.47x = 6,709,012.77
  5. Step 5: Solve for x
    x = 6,709,012.77/3,681.47
  6. Step 6: Final answer
    x = 1,822.38

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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.