Home / 7,116.40-10,727.98-6,640.66

Finding the Fourth Proportional to 7,116.40, 10,727.98 and 6,640.66

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Solution

The fourth proportional to 7,116.40, 10,727.98 and 6,640.66 is: 10,010.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,116.40 : 10,727.98 = 6,640.66 : x
  2. Step 2: Convert to fraction form
    7,116.40/10,727.98 = 6,640.66/x
  3. Step 3: Cross multiply
    7,116.40x = 10,727.98 × 6,640.66
  4. Step 4: Simplify right side
    7,116.40x = 71,240,867.67
  5. Step 5: Solve for x
    x = 71,240,867.67/7,116.40
  6. Step 6: Final answer
    x = 10,010.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.