Home / 3,102.78-4,281.38-1,776.23

Finding the Fourth Proportional to 3,102.78, 4,281.38 and 1,776.23

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Solution

The fourth proportional to 3,102.78, 4,281.38 and 1,776.23 is: 2,450.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,102.78 : 4,281.38 = 1,776.23 : x
  2. Step 2: Convert to fraction form
    3,102.78/4,281.38 = 1,776.23/x
  3. Step 3: Cross multiply
    3,102.78x = 4,281.38 × 1,776.23
  4. Step 4: Simplify right side
    3,102.78x = 7,604,715.60
  5. Step 5: Solve for x
    x = 7,604,715.60/3,102.78
  6. Step 6: Final answer
    x = 2,450.94

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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.