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Finding the Fourth Proportional to 3,806.80, 5,695.80 and 2,510.80

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Solution

The fourth proportional to 3,806.80, 5,695.80 and 2,510.80 is: 3,756.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,806.80 : 5,695.80 = 2,510.80 : x
  2. Step 2: Convert to fraction form
    3,806.80/5,695.80 = 2,510.80/x
  3. Step 3: Cross multiply
    3,806.80x = 5,695.80 × 2,510.80
  4. Step 4: Simplify right side
    3,806.80x = 14,301,014.64
  5. Step 5: Solve for x
    x = 14,301,014.64/3,806.80
  6. Step 6: Final answer
    x = 3,756.70

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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.