Home / 2,913.74-4,367.52-1,987

Finding the Fourth Proportional to 2,913.74, 4,367.52 and 1,987

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Solution

The fourth proportional to 2,913.74, 4,367.52 and 1,987 is: 2,978.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.74 : 4,367.52 = 1,987 : x
  2. Step 2: Convert to fraction form
    2,913.74/4,367.52 = 1,987/x
  3. Step 3: Cross multiply
    2,913.74x = 4,367.52 × 1,987
  4. Step 4: Simplify right side
    2,913.74x = 8,678,262.24
  5. Step 5: Solve for x
    x = 8,678,262.24/2,913.74
  6. Step 6: Final answer
    x = 2,978.39

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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.