Home / 4,086.67-5,639.28-2,318.56

Finding the Fourth Proportional to 4,086.67, 5,639.28 and 2,318.56

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Solution

The fourth proportional to 4,086.67, 5,639.28 and 2,318.56 is: 3,199.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,086.67 : 5,639.28 = 2,318.56 : x
  2. Step 2: Convert to fraction form
    4,086.67/5,639.28 = 2,318.56/x
  3. Step 3: Cross multiply
    4,086.67x = 5,639.28 × 2,318.56
  4. Step 4: Simplify right side
    4,086.67x = 13,075,009.04
  5. Step 5: Solve for x
    x = 13,075,009.04/4,086.67
  6. Step 6: Final answer
    x = 3,199.43

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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.