Home / 2,987.80-4,116.78-2,200.60

Finding the Fourth Proportional to 2,987.80, 4,116.78 and 2,200.60

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Solution

The fourth proportional to 2,987.80, 4,116.78 and 2,200.60 is: 3,032.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.80 : 4,116.78 = 2,200.60 : x
  2. Step 2: Convert to fraction form
    2,987.80/4,116.78 = 2,200.60/x
  3. Step 3: Cross multiply
    2,987.80x = 4,116.78 × 2,200.60
  4. Step 4: Simplify right side
    2,987.80x = 9,059,386.07
  5. Step 5: Solve for x
    x = 9,059,386.07/2,987.80
  6. Step 6: Final answer
    x = 3,032.13

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1.5x scale

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.