Home / 2,281.80-3,148.62-1,287.02

Finding the Fourth Proportional to 2,281.80, 3,148.62 and 1,287.02

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Solution

The fourth proportional to 2,281.80, 3,148.62 and 1,287.02 is: 1,775.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,281.80 : 3,148.62 = 1,287.02 : x
  2. Step 2: Convert to fraction form
    2,281.80/3,148.62 = 1,287.02/x
  3. Step 3: Cross multiply
    2,281.80x = 3,148.62 × 1,287.02
  4. Step 4: Simplify right side
    2,281.80x = 4,052,347.20
  5. Step 5: Solve for x
    x = 4,052,347.20/2,281.80
  6. Step 6: Final answer
    x = 1,775.94

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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.