Home / 2,987.48-4,116.90-2,242.28

Finding the Fourth Proportional to 2,987.48, 4,116.90 and 2,242.28

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Solution

The fourth proportional to 2,987.48, 4,116.90 and 2,242.28 is: 3,089.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.48 : 4,116.90 = 2,242.28 : x
  2. Step 2: Convert to fraction form
    2,987.48/4,116.90 = 2,242.28/x
  3. Step 3: Cross multiply
    2,987.48x = 4,116.90 × 2,242.28
  4. Step 4: Simplify right side
    2,987.48x = 9,231,242.53
  5. Step 5: Solve for x
    x = 9,231,242.53/2,987.48
  6. Step 6: Final answer
    x = 3,089.98

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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.