Home / 2,987.84-4,123.22-1,661.52

Finding the Fourth Proportional to 2,987.84, 4,123.22 and 1,661.52

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Solution

The fourth proportional to 2,987.84, 4,123.22 and 1,661.52 is: 2,292.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.84 : 4,123.22 = 1,661.52 : x
  2. Step 2: Convert to fraction form
    2,987.84/4,123.22 = 1,661.52/x
  3. Step 3: Cross multiply
    2,987.84x = 4,123.22 × 1,661.52
  4. Step 4: Simplify right side
    2,987.84x = 6,850,804.19
  5. Step 5: Solve for x
    x = 6,850,804.19/2,987.84
  6. Step 6: Final answer
    x = 2,292.90

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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.