Home / 4,743.80-7,115.70-1,281.05

Finding the Fourth Proportional to 4,743.80, 7,115.70 and 1,281.05

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Solution

The fourth proportional to 4,743.80, 7,115.70 and 1,281.05 is: 1,921.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,743.80 : 7,115.70 = 1,281.05 : x
  2. Step 2: Convert to fraction form
    4,743.80/7,115.70 = 1,281.05/x
  3. Step 3: Cross multiply
    4,743.80x = 7,115.70 × 1,281.05
  4. Step 4: Simplify right side
    4,743.80x = 9,115,531.91
  5. Step 5: Solve for x
    x = 9,115,531.91/4,743.80
  6. Step 6: Final answer
    x = 1,921.57

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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.