Home / 2,930.14-4,390.35-2,560.78

Finding the Fourth Proportional to 2,930.14, 4,390.35 and 2,560.78

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Solution

The fourth proportional to 2,930.14, 4,390.35 and 2,560.78 is: 3,836.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,930.14 : 4,390.35 = 2,560.78 : x
  2. Step 2: Convert to fraction form
    2,930.14/4,390.35 = 2,560.78/x
  3. Step 3: Cross multiply
    2,930.14x = 4,390.35 × 2,560.78
  4. Step 4: Simplify right side
    2,930.14x = 11,242,720.47
  5. Step 5: Solve for x
    x = 11,242,720.47/2,930.14
  6. Step 6: Final answer
    x = 3,836.92

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1.5x scale

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.