Home / 3,285.28-4,929.18-1,986.76

Finding the Fourth Proportional to 3,285.28, 4,929.18 and 1,986.76

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Solution

The fourth proportional to 3,285.28, 4,929.18 and 1,986.76 is: 2,980.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,285.28 : 4,929.18 = 1,986.76 : x
  2. Step 2: Convert to fraction form
    3,285.28/4,929.18 = 1,986.76/x
  3. Step 3: Cross multiply
    3,285.28x = 4,929.18 × 1,986.76
  4. Step 4: Simplify right side
    3,285.28x = 9,793,097.66
  5. Step 5: Solve for x
    x = 9,793,097.66/3,285.28
  6. Step 6: Final answer
    x = 2,980.90

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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.