Home / 3,091.10-4,639.04-1,243.40

Finding the Fourth Proportional to 3,091.10, 4,639.04 and 1,243.40

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Solution

The fourth proportional to 3,091.10, 4,639.04 and 1,243.40 is: 1,866.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,091.10 : 4,639.04 = 1,243.40 : x
  2. Step 2: Convert to fraction form
    3,091.10/4,639.04 = 1,243.40/x
  3. Step 3: Cross multiply
    3,091.10x = 4,639.04 × 1,243.40
  4. Step 4: Simplify right side
    3,091.10x = 5,768,152.92
  5. Step 5: Solve for x
    x = 5,768,152.92/3,091.10
  6. Step 6: Final answer
    x = 1,866.05

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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.