Home / 3,547.11-5,320.47-1,081.89

Finding the Fourth Proportional to 3,547.11, 5,320.47 and 1,081.89

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Solution

The fourth proportional to 3,547.11, 5,320.47 and 1,081.89 is: 1,622.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,547.11 : 5,320.47 = 1,081.89 : x
  2. Step 2: Convert to fraction form
    3,547.11/5,320.47 = 1,081.89/x
  3. Step 3: Cross multiply
    3,547.11x = 5,320.47 × 1,081.89
  4. Step 4: Simplify right side
    3,547.11x = 5,756,163.29
  5. Step 5: Solve for x
    x = 5,756,163.29/3,547.11
  6. Step 6: Final answer
    x = 1,622.78

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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.