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Finding the Fourth Proportional to 6,886.54, 9,503.49 and 4,091.50

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Solution

The fourth proportional to 6,886.54, 9,503.49 and 4,091.50 is: 5,646.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,886.54 : 9,503.49 = 4,091.50 : x
  2. Step 2: Convert to fraction form
    6,886.54/9,503.49 = 4,091.50/x
  3. Step 3: Cross multiply
    6,886.54x = 9,503.49 × 4,091.50
  4. Step 4: Simplify right side
    6,886.54x = 38,883,529.34
  5. Step 5: Solve for x
    x = 38,883,529.34/6,886.54
  6. Step 6: Final answer
    x = 5,646.31

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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.