Home / 2,987.09-4,124.60-2,671.80

Finding the Fourth Proportional to 2,987.09, 4,124.60 and 2,671.80

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Solution

The fourth proportional to 2,987.09, 4,124.60 and 2,671.80 is: 3,689.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.09 : 4,124.60 = 2,671.80 : x
  2. Step 2: Convert to fraction form
    2,987.09/4,124.60 = 2,671.80/x
  3. Step 3: Cross multiply
    2,987.09x = 4,124.60 × 2,671.80
  4. Step 4: Simplify right side
    2,987.09x = 11,020,112.96
  5. Step 5: Solve for x
    x = 11,020,112.96/2,987.09
  6. Step 6: Final answer
    x = 3,689.24

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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.