Home / 5,118.71-7,063.75-2,880.59

Finding the Fourth Proportional to 5,118.71, 7,063.75 and 2,880.59

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Solution

The fourth proportional to 5,118.71, 7,063.75 and 2,880.59 is: 3,975.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.71 : 7,063.75 = 2,880.59 : x
  2. Step 2: Convert to fraction form
    5,118.71/7,063.75 = 2,880.59/x
  3. Step 3: Cross multiply
    5,118.71x = 7,063.75 × 2,880.59
  4. Step 4: Simplify right side
    5,118.71x = 20,347,778.07
  5. Step 5: Solve for x
    x = 20,347,778.07/5,118.71
  6. Step 6: Final answer
    x = 3,975.18

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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.