Home / 3,129.16-4,318.12-1,784.96

Finding the Fourth Proportional to 3,129.16, 4,318.12 and 1,784.96

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Solution

The fourth proportional to 3,129.16, 4,318.12 and 1,784.96 is: 2,463.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.16 : 4,318.12 = 1,784.96 : x
  2. Step 2: Convert to fraction form
    3,129.16/4,318.12 = 1,784.96/x
  3. Step 3: Cross multiply
    3,129.16x = 4,318.12 × 1,784.96
  4. Step 4: Simplify right side
    3,129.16x = 7,707,671.48
  5. Step 5: Solve for x
    x = 7,707,671.48/3,129.16
  6. Step 6: Final answer
    x = 2,463.18

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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.