Home / 2,291.20-3,167.04-2,109.76

Finding the Fourth Proportional to 2,291.20, 3,167.04 and 2,109.76

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Solution

The fourth proportional to 2,291.20, 3,167.04 and 2,109.76 is: 2,916.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.20 : 3,167.04 = 2,109.76 : x
  2. Step 2: Convert to fraction form
    2,291.20/3,167.04 = 2,109.76/x
  3. Step 3: Cross multiply
    2,291.20x = 3,167.04 × 2,109.76
  4. Step 4: Simplify right side
    2,291.20x = 6,681,694.31
  5. Step 5: Solve for x
    x = 6,681,694.31/2,291.20
  6. Step 6: Final answer
    x = 2,916.24

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1.5x scale

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.