Home / 3,721.12-5,581.84-1,411.36

Finding the Fourth Proportional to 3,721.12, 5,581.84 and 1,411.36

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Solution

The fourth proportional to 3,721.12, 5,581.84 and 1,411.36 is: 2,117.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,721.12 : 5,581.84 = 1,411.36 : x
  2. Step 2: Convert to fraction form
    3,721.12/5,581.84 = 1,411.36/x
  3. Step 3: Cross multiply
    3,721.12x = 5,581.84 × 1,411.36
  4. Step 4: Simplify right side
    3,721.12x = 7,877,985.70
  5. Step 5: Solve for x
    x = 7,877,985.70/3,721.12
  6. Step 6: Final answer
    x = 2,117.10

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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.