Home / 2,890.10-3,984.96-2,734.40

Finding the Fourth Proportional to 2,890.10, 3,984.96 and 2,734.40

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Solution

The fourth proportional to 2,890.10, 3,984.96 and 2,734.40 is: 3,770.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.10 : 3,984.96 = 2,734.40 : x
  2. Step 2: Convert to fraction form
    2,890.10/3,984.96 = 2,734.40/x
  3. Step 3: Cross multiply
    2,890.10x = 3,984.96 × 2,734.40
  4. Step 4: Simplify right side
    2,890.10x = 10,896,474.62
  5. Step 5: Solve for x
    x = 10,896,474.62/2,890.10
  6. Step 6: Final answer
    x = 3,770.28

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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.