Home / 2,972.31-4,101.80-1,646.15

Finding the Fourth Proportional to 2,972.31, 4,101.80 and 1,646.15

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Solution

The fourth proportional to 2,972.31, 4,101.80 and 1,646.15 is: 2,271.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,972.31 : 4,101.80 = 1,646.15 : x
  2. Step 2: Convert to fraction form
    2,972.31/4,101.80 = 1,646.15/x
  3. Step 3: Cross multiply
    2,972.31x = 4,101.80 × 1,646.15
  4. Step 4: Simplify right side
    2,972.31x = 6,752,149.33
  5. Step 5: Solve for x
    x = 6,752,149.33/2,972.31
  6. Step 6: Final answer
    x = 2,271.68

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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.