Home / 5,118.40-7,063.16-2,880.40

Finding the Fourth Proportional to 5,118.40, 7,063.16 and 2,880.40

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Solution

The fourth proportional to 5,118.40, 7,063.16 and 2,880.40 is: 3,974.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.40 : 7,063.16 = 2,880.40 : x
  2. Step 2: Convert to fraction form
    5,118.40/7,063.16 = 2,880.40/x
  3. Step 3: Cross multiply
    5,118.40x = 7,063.16 × 2,880.40
  4. Step 4: Simplify right side
    5,118.40x = 20,344,726.06
  5. Step 5: Solve for x
    x = 20,344,726.06/5,118.40
  6. Step 6: Final answer
    x = 3,974.82

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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.