Home / 5,325.20-7,988.60-1,861.52

Finding the Fourth Proportional to 5,325.20, 7,988.60 and 1,861.52

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Solution

The fourth proportional to 5,325.20, 7,988.60 and 1,861.52 is: 2,792.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,325.20 : 7,988.60 = 1,861.52 : x
  2. Step 2: Convert to fraction form
    5,325.20/7,988.60 = 1,861.52/x
  3. Step 3: Cross multiply
    5,325.20x = 7,988.60 × 1,861.52
  4. Step 4: Simplify right side
    5,325.20x = 14,870,938.67
  5. Step 5: Solve for x
    x = 14,870,938.67/5,325.20
  6. Step 6: Final answer
    x = 2,792.56

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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.