Home / 1,243.72-1,865.34-1,001.65

Finding the Fourth Proportional to 1,243.72, 1,865.34 and 1,001.65

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Solution

The fourth proportional to 1,243.72, 1,865.34 and 1,001.65 is: 1,502.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243.72 : 1,865.34 = 1,001.65 : x
  2. Step 2: Convert to fraction form
    1,243.72/1,865.34 = 1,001.65/x
  3. Step 3: Cross multiply
    1,243.72x = 1,865.34 × 1,001.65
  4. Step 4: Simplify right side
    1,243.72x = 1,868,417.81
  5. Step 5: Solve for x
    x = 1,868,417.81/1,243.72
  6. Step 6: Final answer
    x = 1,502.28

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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.