Home / 2,215.11-3,057.29-1,319.07

Finding the Fourth Proportional to 2,215.11, 3,057.29 and 1,319.07

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Solution

The fourth proportional to 2,215.11, 3,057.29 and 1,319.07 is: 1,820.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.11 : 3,057.29 = 1,319.07 : x
  2. Step 2: Convert to fraction form
    2,215.11/3,057.29 = 1,319.07/x
  3. Step 3: Cross multiply
    2,215.11x = 3,057.29 × 1,319.07
  4. Step 4: Simplify right side
    2,215.11x = 4,032,757.64
  5. Step 5: Solve for x
    x = 4,032,757.64/2,215.11
  6. Step 6: Final answer
    x = 1,820.57

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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.