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Finding the Fourth Proportional to 7,656.67, 10,559.59 and 6,879.07

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Solution

The fourth proportional to 7,656.67, 10,559.59 and 6,879.07 is: 9,487.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,656.67 : 10,559.59 = 6,879.07 : x
  2. Step 2: Convert to fraction form
    7,656.67/10,559.59 = 6,879.07/x
  3. Step 3: Cross multiply
    7,656.67x = 10,559.59 × 6,879.07
  4. Step 4: Simplify right side
    7,656.67x = 72,640,158.78
  5. Step 5: Solve for x
    x = 72,640,158.78/7,656.67
  6. Step 6: Final answer
    x = 9,487.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.