Home / 8,520.39-12,779.10-2,280.96

Finding the Fourth Proportional to 8,520.39, 12,779.10 and 2,280.96

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Solution

The fourth proportional to 8,520.39, 12,779.10 and 2,280.96 is: 3,421.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,520.39 : 12,779.10 = 2,280.96 : x
  2. Step 2: Convert to fraction form
    8,520.39/12,779.10 = 2,280.96/x
  3. Step 3: Cross multiply
    8,520.39x = 12,779.10 × 2,280.96
  4. Step 4: Simplify right side
    8,520.39x = 29,148,615.94
  5. Step 5: Solve for x
    x = 29,148,615.94/8,520.39
  6. Step 6: Final answer
    x = 3,421.04

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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.