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Finding the Fourth Proportional to 8,045.78, 12,065.71 and 2,779.45

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Solution

The fourth proportional to 8,045.78, 12,065.71 and 2,779.45 is: 4,168.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,045.78 : 12,065.71 = 2,779.45 : x
  2. Step 2: Convert to fraction form
    8,045.78/12,065.71 = 2,779.45/x
  3. Step 3: Cross multiply
    8,045.78x = 12,065.71 × 2,779.45
  4. Step 4: Simplify right side
    8,045.78x = 33,536,037.66
  5. Step 5: Solve for x
    x = 33,536,037.66/8,045.78
  6. Step 6: Final answer
    x = 4,168.15

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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.