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Finding the Fourth Proportional to 1,247.04, 1,868.13 and 1,202.22

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Solution

The fourth proportional to 1,247.04, 1,868.13 and 1,202.22 is: 1,800.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247.04 : 1,868.13 = 1,202.22 : x
  2. Step 2: Convert to fraction form
    1,247.04/1,868.13 = 1,202.22/x
  3. Step 3: Cross multiply
    1,247.04x = 1,868.13 × 1,202.22
  4. Step 4: Simplify right side
    1,247.04x = 2,245,903.25
  5. Step 5: Solve for x
    x = 2,245,903.25/1,247.04
  6. Step 6: Final answer
    x = 1,800.99

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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.