Home / 2,117.57-3,172.50-1,335.92

Finding the Fourth Proportional to 2,117.57, 3,172.50 and 1,335.92

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Solution

The fourth proportional to 2,117.57, 3,172.50 and 1,335.92 is: 2,001.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.57 : 3,172.50 = 1,335.92 : x
  2. Step 2: Convert to fraction form
    2,117.57/3,172.50 = 1,335.92/x
  3. Step 3: Cross multiply
    2,117.57x = 3,172.50 × 1,335.92
  4. Step 4: Simplify right side
    2,117.57x = 4,238,190.34
  5. Step 5: Solve for x
    x = 4,238,190.34/2,117.57
  6. Step 6: Final answer
    x = 2,001.45

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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.