Home / 3,489.40-5,233.70-1,298.20

Finding the Fourth Proportional to 3,489.40, 5,233.70 and 1,298.20

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Solution

The fourth proportional to 3,489.40, 5,233.70 and 1,298.20 is: 1,947.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,489.40 : 5,233.70 = 1,298.20 : x
  2. Step 2: Convert to fraction form
    3,489.40/5,233.70 = 1,298.20/x
  3. Step 3: Cross multiply
    3,489.40x = 5,233.70 × 1,298.20
  4. Step 4: Simplify right side
    3,489.40x = 6,794,389.34
  5. Step 5: Solve for x
    x = 6,794,389.34/3,489.40
  6. Step 6: Final answer
    x = 1,947.15

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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.