Home / 7,675.36-11,505.85-6,990.60

Finding the Fourth Proportional to 7,675.36, 11,505.85 and 6,990.60

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Solution

The fourth proportional to 7,675.36, 11,505.85 and 6,990.60 is: 10,479.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,675.36 : 11,505.85 = 6,990.60 : x
  2. Step 2: Convert to fraction form
    7,675.36/11,505.85 = 6,990.60/x
  3. Step 3: Cross multiply
    7,675.36x = 11,505.85 × 6,990.60
  4. Step 4: Simplify right side
    7,675.36x = 80,432,820.68
  5. Step 5: Solve for x
    x = 80,432,820.68/7,675.36
  6. Step 6: Final answer
    x = 10,479.36

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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.