Home / 8,779.59-12,106.26-6,785.78

Finding the Fourth Proportional to 8,779.59, 12,106.26 and 6,785.78

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Solution

The fourth proportional to 8,779.59, 12,106.26 and 6,785.78 is: 9,356.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,779.59 : 12,106.26 = 6,785.78 : x
  2. Step 2: Convert to fraction form
    8,779.59/12,106.26 = 6,785.78/x
  3. Step 3: Cross multiply
    8,779.59x = 12,106.26 × 6,785.78
  4. Step 4: Simplify right side
    8,779.59x = 82,150,356.45
  5. Step 5: Solve for x
    x = 82,150,356.45/8,779.59
  6. Step 6: Final answer
    x = 9,356.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.