Home / 8,070.12-12,106.38-2,874.78

Finding the Fourth Proportional to 8,070.12, 12,106.38 and 2,874.78

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Solution

The fourth proportional to 8,070.12, 12,106.38 and 2,874.78 is: 4,312.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,070.12 : 12,106.38 = 2,874.78 : x
  2. Step 2: Convert to fraction form
    8,070.12/12,106.38 = 2,874.78/x
  3. Step 3: Cross multiply
    8,070.12x = 12,106.38 × 2,874.78
  4. Step 4: Simplify right side
    8,070.12x = 34,803,179.10
  5. Step 5: Solve for x
    x = 34,803,179.10/8,070.12
  6. Step 6: Final answer
    x = 4,312.60

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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.