Home / 3,313.60-4,572.72-1,986.88

Finding the Fourth Proportional to 3,313.60, 4,572.72 and 1,986.88

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Solution

The fourth proportional to 3,313.60, 4,572.72 and 1,986.88 is: 2,741.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,313.60 : 4,572.72 = 1,986.88 : x
  2. Step 2: Convert to fraction form
    3,313.60/4,572.72 = 1,986.88/x
  3. Step 3: Cross multiply
    3,313.60x = 4,572.72 × 1,986.88
  4. Step 4: Simplify right side
    3,313.60x = 9,085,445.91
  5. Step 5: Solve for x
    x = 9,085,445.91/3,313.60
  6. Step 6: Final answer
    x = 2,741.87

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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.