Home / 3,010.40-4,515.58-819.10

Finding the Fourth Proportional to 3,010.40, 4,515.58 and 819.10

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Solution

The fourth proportional to 3,010.40, 4,515.58 and 819.10 is: 1,228.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,010.40 : 4,515.58 = 819.10 : x
  2. Step 2: Convert to fraction form
    3,010.40/4,515.58 = 819.10/x
  3. Step 3: Cross multiply
    3,010.40x = 4,515.58 × 819.10
  4. Step 4: Simplify right side
    3,010.40x = 3,698,711.58
  5. Step 5: Solve for x
    x = 3,698,711.58/3,010.40
  6. Step 6: Final answer
    x = 1,228.64

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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.