Home / 3,128.13-4,316.76-1,730.88

Finding the Fourth Proportional to 3,128.13, 4,316.76 and 1,730.88

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Solution

The fourth proportional to 3,128.13, 4,316.76 and 1,730.88 is: 2,388.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.13 : 4,316.76 = 1,730.88 : x
  2. Step 2: Convert to fraction form
    3,128.13/4,316.76 = 1,730.88/x
  3. Step 3: Cross multiply
    3,128.13x = 4,316.76 × 1,730.88
  4. Step 4: Simplify right side
    3,128.13x = 7,471,793.55
  5. Step 5: Solve for x
    x = 7,471,793.55/3,128.13
  6. Step 6: Final answer
    x = 2,388.58

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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.