Home / 8,779.45-12,115.85-4,800.86

Finding the Fourth Proportional to 8,779.45, 12,115.85 and 4,800.86

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Solution

The fourth proportional to 8,779.45, 12,115.85 and 4,800.86 is: 6,625.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,779.45 : 12,115.85 = 4,800.86 : x
  2. Step 2: Convert to fraction form
    8,779.45/12,115.85 = 4,800.86/x
  3. Step 3: Cross multiply
    8,779.45x = 12,115.85 × 4,800.86
  4. Step 4: Simplify right side
    8,779.45x = 58,166,541.92
  5. Step 5: Solve for x
    x = 58,166,541.92/8,779.45
  6. Step 6: Final answer
    x = 6,625.31

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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.