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Finding the Fourth Proportional to 2,685.84, 4,031.16 and 2,249.76

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Solution

The fourth proportional to 2,685.84, 4,031.16 and 2,249.76 is: 3,376.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685.84 : 4,031.16 = 2,249.76 : x
  2. Step 2: Convert to fraction form
    2,685.84/4,031.16 = 2,249.76/x
  3. Step 3: Cross multiply
    2,685.84x = 4,031.16 × 2,249.76
  4. Step 4: Simplify right side
    2,685.84x = 9,069,142.52
  5. Step 5: Solve for x
    x = 9,069,142.52/2,685.84
  6. Step 6: Final answer
    x = 3,376.65

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1.5x scale

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.