Home / 7,611.28-11,417.82-2,930.20

Finding the Fourth Proportional to 7,611.28, 11,417.82 and 2,930.20

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Solution

The fourth proportional to 7,611.28, 11,417.82 and 2,930.20 is: 4,395.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,611.28 : 11,417.82 = 2,930.20 : x
  2. Step 2: Convert to fraction form
    7,611.28/11,417.82 = 2,930.20/x
  3. Step 3: Cross multiply
    7,611.28x = 11,417.82 × 2,930.20
  4. Step 4: Simplify right side
    7,611.28x = 33,456,496.16
  5. Step 5: Solve for x
    x = 33,456,496.16/7,611.28
  6. Step 6: Final answer
    x = 4,395.65

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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.