Home / 3,309.60-4,563.16-2,780.56

Finding the Fourth Proportional to 3,309.60, 4,563.16 and 2,780.56

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Solution

The fourth proportional to 3,309.60, 4,563.16 and 2,780.56 is: 3,833.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,309.60 : 4,563.16 = 2,780.56 : x
  2. Step 2: Convert to fraction form
    3,309.60/4,563.16 = 2,780.56/x
  3. Step 3: Cross multiply
    3,309.60x = 4,563.16 × 2,780.56
  4. Step 4: Simplify right side
    3,309.60x = 12,688,140.17
  5. Step 5: Solve for x
    x = 12,688,140.17/3,309.60
  6. Step 6: Final answer
    x = 3,833.74

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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.