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Finding the Fourth Proportional to 4,886.54, 7,329.82 and 1,965.10

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Solution

The fourth proportional to 4,886.54, 7,329.82 and 1,965.10 is: 2,947.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,886.54 : 7,329.82 = 1,965.10 : x
  2. Step 2: Convert to fraction form
    4,886.54/7,329.82 = 1,965.10/x
  3. Step 3: Cross multiply
    4,886.54x = 7,329.82 × 1,965.10
  4. Step 4: Simplify right side
    4,886.54x = 14,403,829.28
  5. Step 5: Solve for x
    x = 14,403,829.28/4,886.54
  6. Step 6: Final answer
    x = 2,947.65

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.