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Finding the Fourth Proportional to 4,991.68, 6,888.30 and 2,865.74

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Solution

The fourth proportional to 4,991.68, 6,888.30 and 2,865.74 is: 3,954.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,991.68 : 6,888.30 = 2,865.74 : x
  2. Step 2: Convert to fraction form
    4,991.68/6,888.30 = 2,865.74/x
  3. Step 3: Cross multiply
    4,991.68x = 6,888.30 × 2,865.74
  4. Step 4: Simplify right side
    4,991.68x = 19,740,076.84
  5. Step 5: Solve for x
    x = 19,740,076.84/4,991.68
  6. Step 6: Final answer
    x = 3,954.60

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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.