Home / 7,111.20-10,641.60-6,196.80

Finding the Fourth Proportional to 7,111.20, 10,641.60 and 6,196.80

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Solution

The fourth proportional to 7,111.20, 10,641.60 and 6,196.80 is: 9,273.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,111.20 : 10,641.60 = 6,196.80 : x
  2. Step 2: Convert to fraction form
    7,111.20/10,641.60 = 6,196.80/x
  3. Step 3: Cross multiply
    7,111.20x = 10,641.60 × 6,196.80
  4. Step 4: Simplify right side
    7,111.20x = 65,943,866.88
  5. Step 5: Solve for x
    x = 65,943,866.88/7,111.20
  6. Step 6: Final answer
    x = 9,273.24

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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.