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Finding the Fourth Proportional to 6,871.87, 9,485.46 and 4,888.18

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Solution

The fourth proportional to 6,871.87, 9,485.46 and 4,888.18 is: 6,747.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,871.87 : 9,485.46 = 4,888.18 : x
  2. Step 2: Convert to fraction form
    6,871.87/9,485.46 = 4,888.18/x
  3. Step 3: Cross multiply
    6,871.87x = 9,485.46 × 4,888.18
  4. Step 4: Simplify right side
    6,871.87x = 46,366,635.86
  5. Step 5: Solve for x
    x = 46,366,635.86/6,871.87
  6. Step 6: Final answer
    x = 6,747.31

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Double scale
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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.