Home / 1,228.29-1,693.76-948.57

Finding the Fourth Proportional to 1,228.29, 1,693.76 and 948.57

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Solution

The fourth proportional to 1,228.29, 1,693.76 and 948.57 is: 1,308.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228.29 : 1,693.76 = 948.57 : x
  2. Step 2: Convert to fraction form
    1,228.29/1,693.76 = 948.57/x
  3. Step 3: Cross multiply
    1,228.29x = 1,693.76 × 948.57
  4. Step 4: Simplify right side
    1,228.29x = 1,606,649.92
  5. Step 5: Solve for x
    x = 1,606,649.92/1,228.29
  6. Step 6: Final answer
    x = 1,308.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.