Home / 4,890.90-7,320.15-3,432.90

Finding the Fourth Proportional to 4,890.90, 7,320.15 and 3,432.90

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Solution

The fourth proportional to 4,890.90, 7,320.15 and 3,432.90 is: 5,137.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,890.90 : 7,320.15 = 3,432.90 : x
  2. Step 2: Convert to fraction form
    4,890.90/7,320.15 = 3,432.90/x
  3. Step 3: Cross multiply
    4,890.90x = 7,320.15 × 3,432.90
  4. Step 4: Simplify right side
    4,890.90x = 25,129,342.94
  5. Step 5: Solve for x
    x = 25,129,342.94/4,890.90
  6. Step 6: Final answer
    x = 5,137.98

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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.