Home / 1,325.70-1,988.55-1,204.20

Finding the Fourth Proportional to 1,325.70, 1,988.55 and 1,204.20

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Solution

The fourth proportional to 1,325.70, 1,988.55 and 1,204.20 is: 1,806.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325.70 : 1,988.55 = 1,204.20 : x
  2. Step 2: Convert to fraction form
    1,325.70/1,988.55 = 1,204.20/x
  3. Step 3: Cross multiply
    1,325.70x = 1,988.55 × 1,204.20
  4. Step 4: Simplify right side
    1,325.70x = 2,394,611.91
  5. Step 5: Solve for x
    x = 2,394,611.91/1,325.70
  6. Step 6: Final answer
    x = 1,806.30

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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.