Home / 5,140.07-7,711.25-1,853.18

Finding the Fourth Proportional to 5,140.07, 7,711.25 and 1,853.18

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Solution

The fourth proportional to 5,140.07, 7,711.25 and 1,853.18 is: 2,780.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,140.07 : 7,711.25 = 1,853.18 : x
  2. Step 2: Convert to fraction form
    5,140.07/7,711.25 = 1,853.18/x
  3. Step 3: Cross multiply
    5,140.07x = 7,711.25 × 1,853.18
  4. Step 4: Simplify right side
    5,140.07x = 14,290,286.45
  5. Step 5: Solve for x
    x = 14,290,286.45/5,140.07
  6. Step 6: Final answer
    x = 2,780.18

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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.