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Finding the Fourth Proportional to 6,406.97, 8,842.23 and 3,888.50

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Solution

The fourth proportional to 6,406.97, 8,842.23 and 3,888.50 is: 5,366.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,406.97 : 8,842.23 = 3,888.50 : x
  2. Step 2: Convert to fraction form
    6,406.97/8,842.23 = 3,888.50/x
  3. Step 3: Cross multiply
    6,406.97x = 8,842.23 × 3,888.50
  4. Step 4: Simplify right side
    6,406.97x = 34,382,967.14
  5. Step 5: Solve for x
    x = 34,382,967.14/6,406.97
  6. Step 6: Final answer
    x = 5,366.50

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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.