Home / 3,129.17-4,689.59-1,645.35

Finding the Fourth Proportional to 3,129.17, 4,689.59 and 1,645.35

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Solution

The fourth proportional to 3,129.17, 4,689.59 and 1,645.35 is: 2,465.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.17 : 4,689.59 = 1,645.35 : x
  2. Step 2: Convert to fraction form
    3,129.17/4,689.59 = 1,645.35/x
  3. Step 3: Cross multiply
    3,129.17x = 4,689.59 × 1,645.35
  4. Step 4: Simplify right side
    3,129.17x = 7,716,008.68
  5. Step 5: Solve for x
    x = 7,716,008.68/3,129.17
  6. Step 6: Final answer
    x = 2,465.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.