Home / 2,929.50-4,037.79-2,221.12

Finding the Fourth Proportional to 2,929.50, 4,037.79 and 2,221.12

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Solution

The fourth proportional to 2,929.50, 4,037.79 and 2,221.12 is: 3,061.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,929.50 : 4,037.79 = 2,221.12 : x
  2. Step 2: Convert to fraction form
    2,929.50/4,037.79 = 2,221.12/x
  3. Step 3: Cross multiply
    2,929.50x = 4,037.79 × 2,221.12
  4. Step 4: Simplify right side
    2,929.50x = 8,968,416.12
  5. Step 5: Solve for x
    x = 8,968,416.12/2,929.50
  6. Step 6: Final answer
    x = 3,061.42

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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.