Home / 3,842.56-5,303.51-2,515.78

Finding the Fourth Proportional to 3,842.56, 5,303.51 and 2,515.78

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Solution

The fourth proportional to 3,842.56, 5,303.51 and 2,515.78 is: 3,472.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,842.56 : 5,303.51 = 2,515.78 : x
  2. Step 2: Convert to fraction form
    3,842.56/5,303.51 = 2,515.78/x
  3. Step 3: Cross multiply
    3,842.56x = 5,303.51 × 2,515.78
  4. Step 4: Simplify right side
    3,842.56x = 13,342,464.39
  5. Step 5: Solve for x
    x = 13,342,464.39/3,842.56
  6. Step 6: Final answer
    x = 3,472.29

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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.