Home / 3,140.84-4,704.55-2,790.32

Finding the Fourth Proportional to 3,140.84, 4,704.55 and 2,790.32

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Solution

The fourth proportional to 3,140.84, 4,704.55 and 2,790.32 is: 4,179.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.84 : 4,704.55 = 2,790.32 : x
  2. Step 2: Convert to fraction form
    3,140.84/4,704.55 = 2,790.32/x
  3. Step 3: Cross multiply
    3,140.84x = 4,704.55 × 2,790.32
  4. Step 4: Simplify right side
    3,140.84x = 13,127,169.46
  5. Step 5: Solve for x
    x = 13,127,169.46/3,140.84
  6. Step 6: Final answer
    x = 4,179.51

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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.