Home / 1,578.29-2,177.21-948.51

Finding the Fourth Proportional to 1,578.29, 2,177.21 and 948.51

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Solution

The fourth proportional to 1,578.29, 2,177.21 and 948.51 is: 1,308.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,578.29 : 2,177.21 = 948.51 : x
  2. Step 2: Convert to fraction form
    1,578.29/2,177.21 = 948.51/x
  3. Step 3: Cross multiply
    1,578.29x = 2,177.21 × 948.51
  4. Step 4: Simplify right side
    1,578.29x = 2,065,107.83
  5. Step 5: Solve for x
    x = 2,065,107.83/1,578.29
  6. Step 6: Final answer
    x = 1,308.45

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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.