Home / 2,987.04-4,121.94-1,660.68

Finding the Fourth Proportional to 2,987.04, 4,121.94 and 1,660.68

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Solution

The fourth proportional to 2,987.04, 4,121.94 and 1,660.68 is: 2,291.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.04 : 4,121.94 = 1,660.68 : x
  2. Step 2: Convert to fraction form
    2,987.04/4,121.94 = 1,660.68/x
  3. Step 3: Cross multiply
    2,987.04x = 4,121.94 × 1,660.68
  4. Step 4: Simplify right side
    2,987.04x = 6,845,223.32
  5. Step 5: Solve for x
    x = 6,845,223.32/2,987.04
  6. Step 6: Final answer
    x = 2,291.64

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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.