Home / 4,869.20-7,305.60-4,689.20

Finding the Fourth Proportional to 4,869.20, 7,305.60 and 4,689.20

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Solution

The fourth proportional to 4,869.20, 7,305.60 and 4,689.20 is: 7,035.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,869.20 : 7,305.60 = 4,689.20 : x
  2. Step 2: Convert to fraction form
    4,869.20/7,305.60 = 4,689.20/x
  3. Step 3: Cross multiply
    4,869.20x = 7,305.60 × 4,689.20
  4. Step 4: Simplify right side
    4,869.20x = 34,257,419.52
  5. Step 5: Solve for x
    x = 34,257,419.52/4,869.20
  6. Step 6: Final answer
    x = 7,035.53

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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.