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Finding the Fourth Proportional to 6,911.86, 9,537.18 and 6,561.58

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Solution

The fourth proportional to 6,911.86, 9,537.18 and 6,561.58 is: 9,053.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,911.86 : 9,537.18 = 6,561.58 : x
  2. Step 2: Convert to fraction form
    6,911.86/9,537.18 = 6,561.58/x
  3. Step 3: Cross multiply
    6,911.86x = 9,537.18 × 6,561.58
  4. Step 4: Simplify right side
    6,911.86x = 62,578,969.54
  5. Step 5: Solve for x
    x = 62,578,969.54/6,911.86
  6. Step 6: Final answer
    x = 9,053.85

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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.