Home / 8,717.27-13,075.79-2,143.40

Finding the Fourth Proportional to 8,717.27, 13,075.79 and 2,143.40

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Solution

The fourth proportional to 8,717.27, 13,075.79 and 2,143.40 is: 3,215.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,717.27 : 13,075.79 = 2,143.40 : x
  2. Step 2: Convert to fraction form
    8,717.27/13,075.79 = 2,143.40/x
  3. Step 3: Cross multiply
    8,717.27x = 13,075.79 × 2,143.40
  4. Step 4: Simplify right side
    8,717.27x = 28,026,637.57
  5. Step 5: Solve for x
    x = 28,026,637.57/8,717.27
  6. Step 6: Final answer
    x = 3,215.07

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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.