Home / 4,128.71-5,695.72-2,635.88

Finding the Fourth Proportional to 4,128.71, 5,695.72 and 2,635.88

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Solution

The fourth proportional to 4,128.71, 5,695.72 and 2,635.88 is: 3,636.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,128.71 : 5,695.72 = 2,635.88 : x
  2. Step 2: Convert to fraction form
    4,128.71/5,695.72 = 2,635.88/x
  3. Step 3: Cross multiply
    4,128.71x = 5,695.72 × 2,635.88
  4. Step 4: Simplify right side
    4,128.71x = 15,013,199.37
  5. Step 5: Solve for x
    x = 15,013,199.37/4,128.71
  6. Step 6: Final answer
    x = 3,636.30

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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.