Home / 3,708.54-5,120.64-2,715.30

Finding the Fourth Proportional to 3,708.54, 5,120.64 and 2,715.30

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Solution

The fourth proportional to 3,708.54, 5,120.64 and 2,715.30 is: 3,749.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,708.54 : 5,120.64 = 2,715.30 : x
  2. Step 2: Convert to fraction form
    3,708.54/5,120.64 = 2,715.30/x
  3. Step 3: Cross multiply
    3,708.54x = 5,120.64 × 2,715.30
  4. Step 4: Simplify right side
    3,708.54x = 13,904,073.79
  5. Step 5: Solve for x
    x = 13,904,073.79/3,708.54
  6. Step 6: Final answer
    x = 3,749.20

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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.