Home / 2,819.24-3,890.47-1,560.25

Finding the Fourth Proportional to 2,819.24, 3,890.47 and 1,560.25

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Solution

The fourth proportional to 2,819.24, 3,890.47 and 1,560.25 is: 2,153.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.24 : 3,890.47 = 1,560.25 : x
  2. Step 2: Convert to fraction form
    2,819.24/3,890.47 = 1,560.25/x
  3. Step 3: Cross multiply
    2,819.24x = 3,890.47 × 1,560.25
  4. Step 4: Simplify right side
    2,819.24x = 6,070,078.56
  5. Step 5: Solve for x
    x = 6,070,078.56/2,819.24
  6. Step 6: Final answer
    x = 2,153.09

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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.