Home / 8,890.20-12,268.98-4,911.30

Finding the Fourth Proportional to 8,890.20, 12,268.98 and 4,911.30

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Solution

The fourth proportional to 8,890.20, 12,268.98 and 4,911.30 is: 6,777.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,890.20 : 12,268.98 = 4,911.30 : x
  2. Step 2: Convert to fraction form
    8,890.20/12,268.98 = 4,911.30/x
  3. Step 3: Cross multiply
    8,890.20x = 12,268.98 × 4,911.30
  4. Step 4: Simplify right side
    8,890.20x = 60,256,641.47
  5. Step 5: Solve for x
    x = 60,256,641.47/8,890.20
  6. Step 6: Final answer
    x = 6,777.87

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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.