Home / 2,987.85-4,488.66-1,880.72

Finding the Fourth Proportional to 2,987.85, 4,488.66 and 1,880.72

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Solution

The fourth proportional to 2,987.85, 4,488.66 and 1,880.72 is: 2,825.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.85 : 4,488.66 = 1,880.72 : x
  2. Step 2: Convert to fraction form
    2,987.85/4,488.66 = 1,880.72/x
  3. Step 3: Cross multiply
    2,987.85x = 4,488.66 × 1,880.72
  4. Step 4: Simplify right side
    2,987.85x = 8,441,890.19
  5. Step 5: Solve for x
    x = 8,441,890.19/2,987.85
  6. Step 6: Final answer
    x = 2,825.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.