Home / 5,118.58-7,063.36-2,880.40

Finding the Fourth Proportional to 5,118.58, 7,063.36 and 2,880.40

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Solution

The fourth proportional to 5,118.58, 7,063.36 and 2,880.40 is: 3,974.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.58 : 7,063.36 = 2,880.40 : x
  2. Step 2: Convert to fraction form
    5,118.58/7,063.36 = 2,880.40/x
  3. Step 3: Cross multiply
    5,118.58x = 7,063.36 × 2,880.40
  4. Step 4: Simplify right side
    5,118.58x = 20,345,302.14
  5. Step 5: Solve for x
    x = 20,345,302.14/5,118.58
  6. Step 6: Final answer
    x = 3,974.79

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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.