Home / 3,128.65-4,317.35-1,712.07

Finding the Fourth Proportional to 3,128.65, 4,317.35 and 1,712.07

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Solution

The fourth proportional to 3,128.65, 4,317.35 and 1,712.07 is: 2,362.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.65 : 4,317.35 = 1,712.07 : x
  2. Step 2: Convert to fraction form
    3,128.65/4,317.35 = 1,712.07/x
  3. Step 3: Cross multiply
    3,128.65x = 4,317.35 × 1,712.07
  4. Step 4: Simplify right side
    3,128.65x = 7,391,624.70
  5. Step 5: Solve for x
    x = 7,391,624.70/3,128.65
  6. Step 6: Final answer
    x = 2,362.56

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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.