Home / 5,118.95-7,063.40-2,880.39

Finding the Fourth Proportional to 5,118.95, 7,063.40 and 2,880.39

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Solution

The fourth proportional to 5,118.95, 7,063.40 and 2,880.39 is: 3,974.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.95 : 7,063.40 = 2,880.39 : x
  2. Step 2: Convert to fraction form
    5,118.95/7,063.40 = 2,880.39/x
  3. Step 3: Cross multiply
    5,118.95x = 7,063.40 × 2,880.39
  4. Step 4: Simplify right side
    5,118.95x = 20,345,320.82
  5. Step 5: Solve for x
    x = 20,345,320.82/5,118.95
  6. Step 6: Final answer
    x = 3,974.51

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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.