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Finding the Fourth Proportional to 2,295.84, 3,168.21 and 1,247.88

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Solution

The fourth proportional to 2,295.84, 3,168.21 and 1,247.88 is: 1,722.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,295.84 : 3,168.21 = 1,247.88 : x
  2. Step 2: Convert to fraction form
    2,295.84/3,168.21 = 1,247.88/x
  3. Step 3: Cross multiply
    2,295.84x = 3,168.21 × 1,247.88
  4. Step 4: Simplify right side
    2,295.84x = 3,953,545.89
  5. Step 5: Solve for x
    x = 3,953,545.89/2,295.84
  6. Step 6: Final answer
    x = 1,722.05

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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.