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Finding the Fourth Proportional to 3,886.79, 5,864.81 and 3,734.91

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Solution

The fourth proportional to 3,886.79, 5,864.81 and 3,734.91 is: 5,635.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.79 : 5,864.81 = 3,734.91 : x
  2. Step 2: Convert to fraction form
    3,886.79/5,864.81 = 3,734.91/x
  3. Step 3: Cross multiply
    3,886.79x = 5,864.81 × 3,734.91
  4. Step 4: Simplify right side
    3,886.79x = 21,904,518.84
  5. Step 5: Solve for x
    x = 21,904,518.84/3,886.79
  6. Step 6: Final answer
    x = 5,635.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.