Home / 2,758.45-4,138.98-1,116.13

Finding the Fourth Proportional to 2,758.45, 4,138.98 and 1,116.13

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Solution

The fourth proportional to 2,758.45, 4,138.98 and 1,116.13 is: 1,674.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,758.45 : 4,138.98 = 1,116.13 : x
  2. Step 2: Convert to fraction form
    2,758.45/4,138.98 = 1,116.13/x
  3. Step 3: Cross multiply
    2,758.45x = 4,138.98 × 1,116.13
  4. Step 4: Simplify right side
    2,758.45x = 4,619,639.75
  5. Step 5: Solve for x
    x = 4,619,639.75/2,758.45
  6. Step 6: Final answer
    x = 1,674.72

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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.