Home / 2,819.13-3,890.42-1,560.22

Finding the Fourth Proportional to 2,819.13, 3,890.42 and 1,560.22

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Solution

The fourth proportional to 2,819.13, 3,890.42 and 1,560.22 is: 2,153.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.13 : 3,890.42 = 1,560.22 : x
  2. Step 2: Convert to fraction form
    2,819.13/3,890.42 = 1,560.22/x
  3. Step 3: Cross multiply
    2,819.13x = 3,890.42 × 1,560.22
  4. Step 4: Simplify right side
    2,819.13x = 6,069,911.09
  5. Step 5: Solve for x
    x = 6,069,911.09/2,819.13
  6. Step 6: Final answer
    x = 2,153.12

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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.