Home / 8,717.51-13,076.15-2,143.75

Finding the Fourth Proportional to 8,717.51, 13,076.15 and 2,143.75

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Solution

The fourth proportional to 8,717.51, 13,076.15 and 2,143.75 is: 3,215.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,717.51 : 13,076.15 = 2,143.75 : x
  2. Step 2: Convert to fraction form
    8,717.51/13,076.15 = 2,143.75/x
  3. Step 3: Cross multiply
    8,717.51x = 13,076.15 × 2,143.75
  4. Step 4: Simplify right side
    8,717.51x = 28,031,996.56
  5. Step 5: Solve for x
    x = 28,031,996.56/8,717.51
  6. Step 6: Final answer
    x = 3,215.60

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1.5x scale

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.