Home / 8,118.18-12,172.68-2,570.49

Finding the Fourth Proportional to 8,118.18, 12,172.68 and 2,570.49

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Solution

The fourth proportional to 8,118.18, 12,172.68 and 2,570.49 is: 3,854.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,118.18 : 12,172.68 = 2,570.49 : x
  2. Step 2: Convert to fraction form
    8,118.18/12,172.68 = 2,570.49/x
  3. Step 3: Cross multiply
    8,118.18x = 12,172.68 × 2,570.49
  4. Step 4: Simplify right side
    8,118.18x = 31,289,752.21
  5. Step 5: Solve for x
    x = 31,289,752.21/8,118.18
  6. Step 6: Final answer
    x = 3,854.28

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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.