Home / 3,717.11-5,128.58-2,655.20

Finding the Fourth Proportional to 3,717.11, 5,128.58 and 2,655.20

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Solution

The fourth proportional to 3,717.11, 5,128.58 and 2,655.20 is: 3,663.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,717.11 : 5,128.58 = 2,655.20 : x
  2. Step 2: Convert to fraction form
    3,717.11/5,128.58 = 2,655.20/x
  3. Step 3: Cross multiply
    3,717.11x = 5,128.58 × 2,655.20
  4. Step 4: Simplify right side
    3,717.11x = 13,617,425.08
  5. Step 5: Solve for x
    x = 13,617,425.08/3,717.11
  6. Step 6: Final answer
    x = 3,663.44

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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.