Home / 5,815.60-8,723.76-1,920.04

Finding the Fourth Proportional to 5,815.60, 8,723.76 and 1,920.04

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Solution

The fourth proportional to 5,815.60, 8,723.76 and 1,920.04 is: 2,880.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,815.60 : 8,723.76 = 1,920.04 : x
  2. Step 2: Convert to fraction form
    5,815.60/8,723.76 = 1,920.04/x
  3. Step 3: Cross multiply
    5,815.60x = 8,723.76 × 1,920.04
  4. Step 4: Simplify right side
    5,815.60x = 16,749,968.15
  5. Step 5: Solve for x
    x = 16,749,968.15/5,815.60
  6. Step 6: Final answer
    x = 2,880.18

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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.