Home / 1,776.38-2,451.56-979.83

Finding the Fourth Proportional to 1,776.38, 2,451.56 and 979.83

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Solution

The fourth proportional to 1,776.38, 2,451.56 and 979.83 is: 1,352.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,776.38 : 2,451.56 = 979.83 : x
  2. Step 2: Convert to fraction form
    1,776.38/2,451.56 = 979.83/x
  3. Step 3: Cross multiply
    1,776.38x = 2,451.56 × 979.83
  4. Step 4: Simplify right side
    1,776.38x = 2,402,107.14
  5. Step 5: Solve for x
    x = 2,402,107.14/1,776.38
  6. Step 6: Final answer
    x = 1,352.25

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1.5x scale

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.