Home / 7,477.20-11,215.80-3,097.80

Finding the Fourth Proportional to 7,477.20, 11,215.80 and 3,097.80

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Solution

The fourth proportional to 7,477.20, 11,215.80 and 3,097.80 is: 4,646.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,477.20 : 11,215.80 = 3,097.80 : x
  2. Step 2: Convert to fraction form
    7,477.20/11,215.80 = 3,097.80/x
  3. Step 3: Cross multiply
    7,477.20x = 11,215.80 × 3,097.80
  4. Step 4: Simplify right side
    7,477.20x = 34,744,305.24
  5. Step 5: Solve for x
    x = 34,744,305.24/7,477.20
  6. Step 6: Final answer
    x = 4,646.70

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Similar ratio
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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.