Home / 1,948.78-2,689.64-1,163.29

Finding the Fourth Proportional to 1,948.78, 2,689.64 and 1,163.29

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Solution

The fourth proportional to 1,948.78, 2,689.64 and 1,163.29 is: 1,605.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.78 : 2,689.64 = 1,163.29 : x
  2. Step 2: Convert to fraction form
    1,948.78/2,689.64 = 1,163.29/x
  3. Step 3: Cross multiply
    1,948.78x = 2,689.64 × 1,163.29
  4. Step 4: Simplify right side
    1,948.78x = 3,128,831.32
  5. Step 5: Solve for x
    x = 3,128,831.32/1,948.78
  6. Step 6: Final answer
    x = 1,605.53

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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.