Home / 7,279.49-10,919.23-3,116.80

Finding the Fourth Proportional to 7,279.49, 10,919.23 and 3,116.80

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Solution

The fourth proportional to 7,279.49, 10,919.23 and 3,116.80 is: 4,675.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,279.49 : 10,919.23 = 3,116.80 : x
  2. Step 2: Convert to fraction form
    7,279.49/10,919.23 = 3,116.80/x
  3. Step 3: Cross multiply
    7,279.49x = 10,919.23 × 3,116.80
  4. Step 4: Simplify right side
    7,279.49x = 34,033,056.06
  5. Step 5: Solve for x
    x = 34,033,056.06/7,279.49
  6. Step 6: Final answer
    x = 4,675.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.