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Finding the Fourth Proportional to 2,488.87, 3,434.87 and 1,370.04

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Solution

The fourth proportional to 2,488.87, 3,434.87 and 1,370.04 is: 1,890.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,488.87 : 3,434.87 = 1,370.04 : x
  2. Step 2: Convert to fraction form
    2,488.87/3,434.87 = 1,370.04/x
  3. Step 3: Cross multiply
    2,488.87x = 3,434.87 × 1,370.04
  4. Step 4: Simplify right side
    2,488.87x = 4,705,899.84
  5. Step 5: Solve for x
    x = 4,705,899.84/2,488.87
  6. Step 6: Final answer
    x = 1,890.78

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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.