Home / 2,878.11-4,313.41-2,090.11

Finding the Fourth Proportional to 2,878.11, 4,313.41 and 2,090.11

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Solution

The fourth proportional to 2,878.11, 4,313.41 and 2,090.11 is: 3,132.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.11 : 4,313.41 = 2,090.11 : x
  2. Step 2: Convert to fraction form
    2,878.11/4,313.41 = 2,090.11/x
  3. Step 3: Cross multiply
    2,878.11x = 4,313.41 × 2,090.11
  4. Step 4: Simplify right side
    2,878.11x = 9,015,501.38
  5. Step 5: Solve for x
    x = 9,015,501.38/2,878.11
  6. Step 6: Final answer
    x = 3,132.44

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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.