Home / 2,858.80-4,287.48-1,127.44

Finding the Fourth Proportional to 2,858.80, 4,287.48 and 1,127.44

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Solution

The fourth proportional to 2,858.80, 4,287.48 and 1,127.44 is: 1,690.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,858.80 : 4,287.48 = 1,127.44 : x
  2. Step 2: Convert to fraction form
    2,858.80/4,287.48 = 1,127.44/x
  3. Step 3: Cross multiply
    2,858.80x = 4,287.48 × 1,127.44
  4. Step 4: Simplify right side
    2,858.80x = 4,833,876.45
  5. Step 5: Solve for x
    x = 4,833,876.45/2,858.80
  6. Step 6: Final answer
    x = 1,690.88

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1.5x scale

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.