Home / 8,898.91-12,280-4,919.79

Finding the Fourth Proportional to 8,898.91, 12,280 and 4,919.79

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Solution

The fourth proportional to 8,898.91, 12,280 and 4,919.79 is: 6,789.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,898.91 : 12,280 = 4,919.79 : x
  2. Step 2: Convert to fraction form
    8,898.91/12,280 = 4,919.79/x
  3. Step 3: Cross multiply
    8,898.91x = 12,280 × 4,919.79
  4. Step 4: Simplify right side
    8,898.91x = 60,415,021.20
  5. Step 5: Solve for x
    x = 60,415,021.20/8,898.91
  6. Step 6: Final answer
    x = 6,789.04

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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.