Home / 3,117.55-4,302.62-2,172.73

Finding the Fourth Proportional to 3,117.55, 4,302.62 and 2,172.73

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Solution

The fourth proportional to 3,117.55, 4,302.62 and 2,172.73 is: 2,998.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.55 : 4,302.62 = 2,172.73 : x
  2. Step 2: Convert to fraction form
    3,117.55/4,302.62 = 2,172.73/x
  3. Step 3: Cross multiply
    3,117.55x = 4,302.62 × 2,172.73
  4. Step 4: Simplify right side
    3,117.55x = 9,348,415.47
  5. Step 5: Solve for x
    x = 9,348,415.47/3,117.55
  6. Step 6: Final answer
    x = 2,998.65

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1.5x scale

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.