Home / 3,128.42-4,317.18-1,712.18

Finding the Fourth Proportional to 3,128.42, 4,317.18 and 1,712.18

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Solution

The fourth proportional to 3,128.42, 4,317.18 and 1,712.18 is: 2,362.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.42 : 4,317.18 = 1,712.18 : x
  2. Step 2: Convert to fraction form
    3,128.42/4,317.18 = 1,712.18/x
  3. Step 3: Cross multiply
    3,128.42x = 4,317.18 × 1,712.18
  4. Step 4: Simplify right side
    3,128.42x = 7,391,793.62
  5. Step 5: Solve for x
    x = 7,391,793.62/3,128.42
  6. Step 6: Final answer
    x = 2,362.79

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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.