Home / 8,649.50-12,979.19-3,384.95

Finding the Fourth Proportional to 8,649.50, 12,979.19 and 3,384.95

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Solution

The fourth proportional to 8,649.50, 12,979.19 and 3,384.95 is: 5,079.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,649.50 : 12,979.19 = 3,384.95 : x
  2. Step 2: Convert to fraction form
    8,649.50/12,979.19 = 3,384.95/x
  3. Step 3: Cross multiply
    8,649.50x = 12,979.19 × 3,384.95
  4. Step 4: Simplify right side
    8,649.50x = 43,933,852.76
  5. Step 5: Solve for x
    x = 43,933,852.76/8,649.50
  6. Step 6: Final answer
    x = 5,079.35

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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.