Home / 3,111.19-4,669.10-1,942.90

Finding the Fourth Proportional to 3,111.19, 4,669.10 and 1,942.90

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Solution

The fourth proportional to 3,111.19, 4,669.10 and 1,942.90 is: 2,915.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.19 : 4,669.10 = 1,942.90 : x
  2. Step 2: Convert to fraction form
    3,111.19/4,669.10 = 1,942.90/x
  3. Step 3: Cross multiply
    3,111.19x = 4,669.10 × 1,942.90
  4. Step 4: Simplify right side
    3,111.19x = 9,071,594.39
  5. Step 5: Solve for x
    x = 9,071,594.39/3,111.19
  6. Step 6: Final answer
    x = 2,915.80

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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.