Home / 2,774.15-3,828.29-1,515.20

Finding the Fourth Proportional to 2,774.15, 3,828.29 and 1,515.20

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Solution

The fourth proportional to 2,774.15, 3,828.29 and 1,515.20 is: 2,090.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,774.15 : 3,828.29 = 1,515.20 : x
  2. Step 2: Convert to fraction form
    2,774.15/3,828.29 = 1,515.20/x
  3. Step 3: Cross multiply
    2,774.15x = 3,828.29 × 1,515.20
  4. Step 4: Simplify right side
    2,774.15x = 5,800,598.29
  5. Step 5: Solve for x
    x = 5,800,598.29/2,774.15
  6. Step 6: Final answer
    x = 2,090.95

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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.