Home / 10,615.50-15,923.25-3,690

Finding the Fourth Proportional to 10,615.50, 15,923.25 and 3,690

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Solution

The fourth proportional to 10,615.50, 15,923.25 and 3,690 is: 5,535

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,615.50 : 15,923.25 = 3,690 : x
  2. Step 2: Convert to fraction form
    10,615.50/15,923.25 = 3,690/x
  3. Step 3: Cross multiply
    10,615.50x = 15,923.25 × 3,690
  4. Step 4: Simplify right side
    10,615.50x = 58,756,792.50
  5. Step 5: Solve for x
    x = 58,756,792.50/10,615.50
  6. Step 6: Final answer
    x = 5,535

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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.