Home / 2,176.50-3,003.75-1,245.18

Finding the Fourth Proportional to 2,176.50, 3,003.75 and 1,245.18

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Solution

The fourth proportional to 2,176.50, 3,003.75 and 1,245.18 is: 1,718.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,176.50 : 3,003.75 = 1,245.18 : x
  2. Step 2: Convert to fraction form
    2,176.50/3,003.75 = 1,245.18/x
  3. Step 3: Cross multiply
    2,176.50x = 3,003.75 × 1,245.18
  4. Step 4: Simplify right side
    2,176.50x = 3,740,209.43
  5. Step 5: Solve for x
    x = 3,740,209.43/2,176.50
  6. Step 6: Final answer
    x = 1,718.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.