Home / 8,641.20-12,961.80-6,567.60

Finding the Fourth Proportional to 8,641.20, 12,961.80 and 6,567.60

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Solution

The fourth proportional to 8,641.20, 12,961.80 and 6,567.60 is: 9,851.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,641.20 : 12,961.80 = 6,567.60 : x
  2. Step 2: Convert to fraction form
    8,641.20/12,961.80 = 6,567.60/x
  3. Step 3: Cross multiply
    8,641.20x = 12,961.80 × 6,567.60
  4. Step 4: Simplify right side
    8,641.20x = 85,127,917.68
  5. Step 5: Solve for x
    x = 85,127,917.68/8,641.20
  6. Step 6: Final answer
    x = 9,851.40

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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.