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Finding the Fourth Proportional to 2,806.80, 4,209.12 and 1,075.56

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Solution

The fourth proportional to 2,806.80, 4,209.12 and 1,075.56 is: 1,612.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,806.80 : 4,209.12 = 1,075.56 : x
  2. Step 2: Convert to fraction form
    2,806.80/4,209.12 = 1,075.56/x
  3. Step 3: Cross multiply
    2,806.80x = 4,209.12 × 1,075.56
  4. Step 4: Simplify right side
    2,806.80x = 4,527,161.11
  5. Step 5: Solve for x
    x = 4,527,161.11/2,806.80
  6. Step 6: Final answer
    x = 1,612.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.