Home / 2,451.12-3,670.47-2,106.78

Finding the Fourth Proportional to 2,451.12, 3,670.47 and 2,106.78

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Solution

The fourth proportional to 2,451.12, 3,670.47 and 2,106.78 is: 3,154.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,451.12 : 3,670.47 = 2,106.78 : x
  2. Step 2: Convert to fraction form
    2,451.12/3,670.47 = 2,106.78/x
  3. Step 3: Cross multiply
    2,451.12x = 3,670.47 × 2,106.78
  4. Step 4: Simplify right side
    2,451.12x = 7,732,872.79
  5. Step 5: Solve for x
    x = 7,732,872.79/2,451.12
  6. Step 6: Final answer
    x = 3,154.83

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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.