Home / 10,185.79-15,278.73-3,612.19

Finding the Fourth Proportional to 10,185.79, 15,278.73 and 3,612.19

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Solution

The fourth proportional to 10,185.79, 15,278.73 and 3,612.19 is: 5,418.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,185.79 : 15,278.73 = 3,612.19 : x
  2. Step 2: Convert to fraction form
    10,185.79/15,278.73 = 3,612.19/x
  3. Step 3: Cross multiply
    10,185.79x = 15,278.73 × 3,612.19
  4. Step 4: Simplify right side
    10,185.79x = 55,189,675.72
  5. Step 5: Solve for x
    x = 55,189,675.72/10,185.79
  6. Step 6: Final answer
    x = 5,418.30

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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.