Home / 2,912.09-4,017.50-1,777.17

Finding the Fourth Proportional to 2,912.09, 4,017.50 and 1,777.17

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Solution

The fourth proportional to 2,912.09, 4,017.50 and 1,777.17 is: 2,451.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.09 : 4,017.50 = 1,777.17 : x
  2. Step 2: Convert to fraction form
    2,912.09/4,017.50 = 1,777.17/x
  3. Step 3: Cross multiply
    2,912.09x = 4,017.50 × 1,777.17
  4. Step 4: Simplify right side
    2,912.09x = 7,139,793.32
  5. Step 5: Solve for x
    x = 7,139,793.32/2,912.09
  6. Step 6: Final answer
    x = 2,451.78

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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.