Home / 1,864.13-2,572.97-1,078.65

Finding the Fourth Proportional to 1,864.13, 2,572.97 and 1,078.65

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Solution

The fourth proportional to 1,864.13, 2,572.97 and 1,078.65 is: 1,488.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,864.13 : 2,572.97 = 1,078.65 : x
  2. Step 2: Convert to fraction form
    1,864.13/2,572.97 = 1,078.65/x
  3. Step 3: Cross multiply
    1,864.13x = 2,572.97 × 1,078.65
  4. Step 4: Simplify right side
    1,864.13x = 2,775,328.70
  5. Step 5: Solve for x
    x = 2,775,328.70/1,864.13
  6. Step 6: Final answer
    x = 1,488.81

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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.