Home / 3,129.54-4,317.45-1,802.97

Finding the Fourth Proportional to 3,129.54, 4,317.45 and 1,802.97

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Solution

The fourth proportional to 3,129.54, 4,317.45 and 1,802.97 is: 2,487.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.54 : 4,317.45 = 1,802.97 : x
  2. Step 2: Convert to fraction form
    3,129.54/4,317.45 = 1,802.97/x
  3. Step 3: Cross multiply
    3,129.54x = 4,317.45 × 1,802.97
  4. Step 4: Simplify right side
    3,129.54x = 7,784,232.83
  5. Step 5: Solve for x
    x = 7,784,232.83/3,129.54
  6. Step 6: Final answer
    x = 2,487.34

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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.