Home / 3,051.45-4,212.95-1,872.90

Finding the Fourth Proportional to 3,051.45, 4,212.95 and 1,872.90

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Solution

The fourth proportional to 3,051.45, 4,212.95 and 1,872.90 is: 2,585.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,051.45 : 4,212.95 = 1,872.90 : x
  2. Step 2: Convert to fraction form
    3,051.45/4,212.95 = 1,872.90/x
  3. Step 3: Cross multiply
    3,051.45x = 4,212.95 × 1,872.90
  4. Step 4: Simplify right side
    3,051.45x = 7,890,424.69
  5. Step 5: Solve for x
    x = 7,890,424.69/3,051.45
  6. Step 6: Final answer
    x = 2,585.80

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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.