Home / 2,972.17-4,101.55-1,645.87

Finding the Fourth Proportional to 2,972.17, 4,101.55 and 1,645.87

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Solution

The fourth proportional to 2,972.17, 4,101.55 and 1,645.87 is: 2,271.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,972.17 : 4,101.55 = 1,645.87 : x
  2. Step 2: Convert to fraction form
    2,972.17/4,101.55 = 1,645.87/x
  3. Step 3: Cross multiply
    2,972.17x = 4,101.55 × 1,645.87
  4. Step 4: Simplify right side
    2,972.17x = 6,750,618.10
  5. Step 5: Solve for x
    x = 6,750,618.10/2,972.17
  6. Step 6: Final answer
    x = 2,271.28

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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.