Home / 3,102.75-4,281.80-1,776.89

Finding the Fourth Proportional to 3,102.75, 4,281.80 and 1,776.89

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Solution

The fourth proportional to 3,102.75, 4,281.80 and 1,776.89 is: 2,452.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,102.75 : 4,281.80 = 1,776.89 : x
  2. Step 2: Convert to fraction form
    3,102.75/4,281.80 = 1,776.89/x
  3. Step 3: Cross multiply
    3,102.75x = 4,281.80 × 1,776.89
  4. Step 4: Simplify right side
    3,102.75x = 7,608,289.42
  5. Step 5: Solve for x
    x = 7,608,289.42/3,102.75
  6. Step 6: Final answer
    x = 2,452.11

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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.