Home / 5,238.81-7,229.61-2,880.99

Finding the Fourth Proportional to 5,238.81, 7,229.61 and 2,880.99

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Solution

The fourth proportional to 5,238.81, 7,229.61 and 2,880.99 is: 3,975.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,238.81 : 7,229.61 = 2,880.99 : x
  2. Step 2: Convert to fraction form
    5,238.81/7,229.61 = 2,880.99/x
  3. Step 3: Cross multiply
    5,238.81x = 7,229.61 × 2,880.99
  4. Step 4: Simplify right side
    5,238.81x = 20,828,434.11
  5. Step 5: Solve for x
    x = 20,828,434.11/5,238.81
  6. Step 6: Final answer
    x = 3,975.79

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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.