Home / 2,686.21-4,035.49-1,908.10

Finding the Fourth Proportional to 2,686.21, 4,035.49 and 1,908.10

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Solution

The fourth proportional to 2,686.21, 4,035.49 and 1,908.10 is: 2,866.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.21 : 4,035.49 = 1,908.10 : x
  2. Step 2: Convert to fraction form
    2,686.21/4,035.49 = 1,908.10/x
  3. Step 3: Cross multiply
    2,686.21x = 4,035.49 × 1,908.10
  4. Step 4: Simplify right side
    2,686.21x = 7,700,118.74
  5. Step 5: Solve for x
    x = 7,700,118.74/2,686.21
  6. Step 6: Final answer
    x = 2,866.54

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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.