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Finding the Fourth Proportional to 3,678.64, 5,071.04 and 2,685.04

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Solution

The fourth proportional to 3,678.64, 5,071.04 and 2,685.04 is: 3,701.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.64 : 5,071.04 = 2,685.04 : x
  2. Step 2: Convert to fraction form
    3,678.64/5,071.04 = 2,685.04/x
  3. Step 3: Cross multiply
    3,678.64x = 5,071.04 × 2,685.04
  4. Step 4: Simplify right side
    3,678.64x = 13,615,945.24
  5. Step 5: Solve for x
    x = 13,615,945.24/3,678.64
  6. Step 6: Final answer
    x = 3,701.35

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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.