Home / 2,489.92-3,436.08-1,370.90

Finding the Fourth Proportional to 2,489.92, 3,436.08 and 1,370.90

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Solution

The fourth proportional to 2,489.92, 3,436.08 and 1,370.90 is: 1,891.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.92 : 3,436.08 = 1,370.90 : x
  2. Step 2: Convert to fraction form
    2,489.92/3,436.08 = 1,370.90/x
  3. Step 3: Cross multiply
    2,489.92x = 3,436.08 × 1,370.90
  4. Step 4: Simplify right side
    2,489.92x = 4,710,522.07
  5. Step 5: Solve for x
    x = 4,710,522.07/2,489.92
  6. Step 6: Final answer
    x = 1,891.84

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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.