Home / 8,418.83-12,627.21-2,178.32

Finding the Fourth Proportional to 8,418.83, 12,627.21 and 2,178.32

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Solution

The fourth proportional to 8,418.83, 12,627.21 and 2,178.32 is: 3,267.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.83 : 12,627.21 = 2,178.32 : x
  2. Step 2: Convert to fraction form
    8,418.83/12,627.21 = 2,178.32/x
  3. Step 3: Cross multiply
    8,418.83x = 12,627.21 × 2,178.32
  4. Step 4: Simplify right side
    8,418.83x = 27,506,093.20
  5. Step 5: Solve for x
    x = 27,506,093.20/8,418.83
  6. Step 6: Final answer
    x = 3,267.21

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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.