Home / 3,316.96-4,577.88-1,990.72

Finding the Fourth Proportional to 3,316.96, 4,577.88 and 1,990.72

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Solution

The fourth proportional to 3,316.96, 4,577.88 and 1,990.72 is: 2,747.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,316.96 : 4,577.88 = 1,990.72 : x
  2. Step 2: Convert to fraction form
    3,316.96/4,577.88 = 1,990.72/x
  3. Step 3: Cross multiply
    3,316.96x = 4,577.88 × 1,990.72
  4. Step 4: Simplify right side
    3,316.96x = 9,113,277.27
  5. Step 5: Solve for x
    x = 9,113,277.27/3,316.96
  6. Step 6: Final answer
    x = 2,747.48

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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.