Home / 2,104.70-3,157.05-1,715.90

Finding the Fourth Proportional to 2,104.70, 3,157.05 and 1,715.90

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Solution

The fourth proportional to 2,104.70, 3,157.05 and 1,715.90 is: 2,573.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,104.70 : 3,157.05 = 1,715.90 : x
  2. Step 2: Convert to fraction form
    2,104.70/3,157.05 = 1,715.90/x
  3. Step 3: Cross multiply
    2,104.70x = 3,157.05 × 1,715.90
  4. Step 4: Simplify right side
    2,104.70x = 5,417,182.10
  5. Step 5: Solve for x
    x = 5,417,182.10/2,104.70
  6. Step 6: Final answer
    x = 2,573.85

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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.