Home / 3,812.55-5,718.96-1,215.42

Finding the Fourth Proportional to 3,812.55, 5,718.96 and 1,215.42

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Solution

The fourth proportional to 3,812.55, 5,718.96 and 1,215.42 is: 1,823.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,812.55 : 5,718.96 = 1,215.42 : x
  2. Step 2: Convert to fraction form
    3,812.55/5,718.96 = 1,215.42/x
  3. Step 3: Cross multiply
    3,812.55x = 5,718.96 × 1,215.42
  4. Step 4: Simplify right side
    3,812.55x = 6,950,938.36
  5. Step 5: Solve for x
    x = 6,950,938.36/3,812.55
  6. Step 6: Final answer
    x = 1,823.17

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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.