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Finding the Fourth Proportional to 2,775.54, 3,810.18 and 2,381.88

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Solution

The fourth proportional to 2,775.54, 3,810.18 and 2,381.88 is: 3,269.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.54 : 3,810.18 = 2,381.88 : x
  2. Step 2: Convert to fraction form
    2,775.54/3,810.18 = 2,381.88/x
  3. Step 3: Cross multiply
    2,775.54x = 3,810.18 × 2,381.88
  4. Step 4: Simplify right side
    2,775.54x = 9,075,391.54
  5. Step 5: Solve for x
    x = 9,075,391.54/2,775.54
  6. Step 6: Final answer
    x = 3,269.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.