Home / 3,051.78-4,215.90-2,061.40

Finding the Fourth Proportional to 3,051.78, 4,215.90 and 2,061.40

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Solution

The fourth proportional to 3,051.78, 4,215.90 and 2,061.40 is: 2,847.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,051.78 : 4,215.90 = 2,061.40 : x
  2. Step 2: Convert to fraction form
    3,051.78/4,215.90 = 2,061.40/x
  3. Step 3: Cross multiply
    3,051.78x = 4,215.90 × 2,061.40
  4. Step 4: Simplify right side
    3,051.78x = 8,690,649.76
  5. Step 5: Solve for x
    x = 8,690,649.76/3,051.78
  6. Step 6: Final answer
    x = 2,847.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.