Home / 2,489.18-3,435.12-1,370.18

Finding the Fourth Proportional to 2,489.18, 3,435.12 and 1,370.18

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Solution

The fourth proportional to 2,489.18, 3,435.12 and 1,370.18 is: 1,890.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.18 : 3,435.12 = 1,370.18 : x
  2. Step 2: Convert to fraction form
    2,489.18/3,435.12 = 1,370.18/x
  3. Step 3: Cross multiply
    2,489.18x = 3,435.12 × 1,370.18
  4. Step 4: Simplify right side
    2,489.18x = 4,706,715.55
  5. Step 5: Solve for x
    x = 4,706,715.55/2,489.18
  6. Step 6: Final answer
    x = 1,890.87

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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.