Home / 4,086.90-5,639.75-2,318.47

Finding the Fourth Proportional to 4,086.90, 5,639.75 and 2,318.47

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Solution

The fourth proportional to 4,086.90, 5,639.75 and 2,318.47 is: 3,199.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,086.90 : 5,639.75 = 2,318.47 : x
  2. Step 2: Convert to fraction form
    4,086.90/5,639.75 = 2,318.47/x
  3. Step 3: Cross multiply
    4,086.90x = 5,639.75 × 2,318.47
  4. Step 4: Simplify right side
    4,086.90x = 13,075,562.98
  5. Step 5: Solve for x
    x = 13,075,562.98/4,086.90
  6. Step 6: Final answer
    x = 3,199.38

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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.