Home / 1,278.71-1,919.06-1,032.51

Finding the Fourth Proportional to 1,278.71, 1,919.06 and 1,032.51

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Solution

The fourth proportional to 1,278.71, 1,919.06 and 1,032.51 is: 1,549.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278.71 : 1,919.06 = 1,032.51 : x
  2. Step 2: Convert to fraction form
    1,278.71/1,919.06 = 1,032.51/x
  3. Step 3: Cross multiply
    1,278.71x = 1,919.06 × 1,032.51
  4. Step 4: Simplify right side
    1,278.71x = 1,981,448.64
  5. Step 5: Solve for x
    x = 1,981,448.64/1,278.71
  6. Step 6: Final answer
    x = 1,549.57

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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.