Home / 2,774.16-3,828.32-1,515.21

Finding the Fourth Proportional to 2,774.16, 3,828.32 and 1,515.21

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Solution

The fourth proportional to 2,774.16, 3,828.32 and 1,515.21 is: 2,090.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,774.16 : 3,828.32 = 1,515.21 : x
  2. Step 2: Convert to fraction form
    2,774.16/3,828.32 = 1,515.21/x
  3. Step 3: Cross multiply
    2,774.16x = 3,828.32 × 1,515.21
  4. Step 4: Simplify right side
    2,774.16x = 5,800,710.48
  5. Step 5: Solve for x
    x = 5,800,710.48/2,774.16
  6. Step 6: Final answer
    x = 2,090.98

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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.