Home / 7,130.20-10,695.30-6,611.80

Finding the Fourth Proportional to 7,130.20, 10,695.30 and 6,611.80

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Solution

The fourth proportional to 7,130.20, 10,695.30 and 6,611.80 is: 9,917.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,130.20 : 10,695.30 = 6,611.80 : x
  2. Step 2: Convert to fraction form
    7,130.20/10,695.30 = 6,611.80/x
  3. Step 3: Cross multiply
    7,130.20x = 10,695.30 × 6,611.80
  4. Step 4: Simplify right side
    7,130.20x = 70,715,184.54
  5. Step 5: Solve for x
    x = 70,715,184.54/7,130.20
  6. Step 6: Final answer
    x = 9,917.70

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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.