Home / 4,329.25-6,488.74-1,987.28

Finding the Fourth Proportional to 4,329.25, 6,488.74 and 1,987.28

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Solution

The fourth proportional to 4,329.25, 6,488.74 and 1,987.28 is: 2,978.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,329.25 : 6,488.74 = 1,987.28 : x
  2. Step 2: Convert to fraction form
    4,329.25/6,488.74 = 1,987.28/x
  3. Step 3: Cross multiply
    4,329.25x = 6,488.74 × 1,987.28
  4. Step 4: Simplify right side
    4,329.25x = 12,894,943.23
  5. Step 5: Solve for x
    x = 12,894,943.23/4,329.25
  6. Step 6: Final answer
    x = 2,978.57

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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.