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Finding the Fourth Proportional to 6,721.74, 10,085.63 and 6,611.00

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Solution

The fourth proportional to 6,721.74, 10,085.63 and 6,611.00 is: 9,919.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,721.74 : 10,085.63 = 6,611.00 : x
  2. Step 2: Convert to fraction form
    6,721.74/10,085.63 = 6,611.00/x
  3. Step 3: Cross multiply
    6,721.74x = 10,085.63 × 6,611.00
  4. Step 4: Simplify right side
    6,721.74x = 66,676,016.45
  5. Step 5: Solve for x
    x = 66,676,016.45/6,721.74
  6. Step 6: Final answer
    x = 9,919.46

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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.