Home / 2,819.36-3,890.55-1,560.37

Finding the Fourth Proportional to 2,819.36, 3,890.55 and 1,560.37

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Solution

The fourth proportional to 2,819.36, 3,890.55 and 1,560.37 is: 2,153.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.36 : 3,890.55 = 1,560.37 : x
  2. Step 2: Convert to fraction form
    2,819.36/3,890.55 = 1,560.37/x
  3. Step 3: Cross multiply
    2,819.36x = 3,890.55 × 1,560.37
  4. Step 4: Simplify right side
    2,819.36x = 6,070,678.05
  5. Step 5: Solve for x
    x = 6,070,678.05/2,819.36
  6. Step 6: Final answer
    x = 2,153.21

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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.