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Finding the Fourth Proportional to 8,070.78, 12,106.80 and 7,103.64

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Solution

The fourth proportional to 8,070.78, 12,106.80 and 7,103.64 is: 10,656.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,070.78 : 12,106.80 = 7,103.64 : x
  2. Step 2: Convert to fraction form
    8,070.78/12,106.80 = 7,103.64/x
  3. Step 3: Cross multiply
    8,070.78x = 12,106.80 × 7,103.64
  4. Step 4: Simplify right side
    8,070.78x = 86,002,348.75
  5. Step 5: Solve for x
    x = 86,002,348.75/8,070.78
  6. Step 6: Final answer
    x = 10,656.01

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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.