Home / 5,118.60-7,063.12-2,880.28

Finding the Fourth Proportional to 5,118.60, 7,063.12 and 2,880.28

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Solution

The fourth proportional to 5,118.60, 7,063.12 and 2,880.28 is: 3,974.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.60 : 7,063.12 = 2,880.28 : x
  2. Step 2: Convert to fraction form
    5,118.60/7,063.12 = 2,880.28/x
  3. Step 3: Cross multiply
    5,118.60x = 7,063.12 × 2,880.28
  4. Step 4: Simplify right side
    5,118.60x = 20,343,763.27
  5. Step 5: Solve for x
    x = 20,343,763.27/5,118.60
  6. Step 6: Final answer
    x = 3,974.48

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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.