Home / 8,278.10-12,415.38-2,730.12

Finding the Fourth Proportional to 8,278.10, 12,415.38 and 2,730.12

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Solution

The fourth proportional to 8,278.10, 12,415.38 and 2,730.12 is: 4,094.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,278.10 : 12,415.38 = 2,730.12 : x
  2. Step 2: Convert to fraction form
    8,278.10/12,415.38 = 2,730.12/x
  3. Step 3: Cross multiply
    8,278.10x = 12,415.38 × 2,730.12
  4. Step 4: Simplify right side
    8,278.10x = 33,895,533.75
  5. Step 5: Solve for x
    x = 33,895,533.75/8,278.10
  6. Step 6: Final answer
    x = 4,094.60

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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.