Home / 1,247.55-1,869.30-1,065.30

Finding the Fourth Proportional to 1,247.55, 1,869.30 and 1,065.30

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Solution

The fourth proportional to 1,247.55, 1,869.30 and 1,065.30 is: 1,596.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247.55 : 1,869.30 = 1,065.30 : x
  2. Step 2: Convert to fraction form
    1,247.55/1,869.30 = 1,065.30/x
  3. Step 3: Cross multiply
    1,247.55x = 1,869.30 × 1,065.30
  4. Step 4: Simplify right side
    1,247.55x = 1,991,365.29
  5. Step 5: Solve for x
    x = 1,991,365.29/1,247.55
  6. Step 6: Final answer
    x = 1,596.22

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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.