Home / 2,891.17-3,988.54-1,772.04

Finding the Fourth Proportional to 2,891.17, 3,988.54 and 1,772.04

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Solution

The fourth proportional to 2,891.17, 3,988.54 and 1,772.04 is: 2,444.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.17 : 3,988.54 = 1,772.04 : x
  2. Step 2: Convert to fraction form
    2,891.17/3,988.54 = 1,772.04/x
  3. Step 3: Cross multiply
    2,891.17x = 3,988.54 × 1,772.04
  4. Step 4: Simplify right side
    2,891.17x = 7,067,852.77
  5. Step 5: Solve for x
    x = 7,067,852.77/2,891.17
  6. Step 6: Final answer
    x = 2,444.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.