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Finding the Fourth Proportional to 7,955.51, 10,985.24 and 6,636.13

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Solution

The fourth proportional to 7,955.51, 10,985.24 and 6,636.13 is: 9,163.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,955.51 : 10,985.24 = 6,636.13 : x
  2. Step 2: Convert to fraction form
    7,955.51/10,985.24 = 6,636.13/x
  3. Step 3: Cross multiply
    7,955.51x = 10,985.24 × 6,636.13
  4. Step 4: Simplify right side
    7,955.51x = 72,899,469.85
  5. Step 5: Solve for x
    x = 72,899,469.85/7,955.51
  6. Step 6: Final answer
    x = 9,163.40

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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.