Home / 3,143.18-4,337.80-1,817.22

Finding the Fourth Proportional to 3,143.18, 4,337.80 and 1,817.22

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Solution

The fourth proportional to 3,143.18, 4,337.80 and 1,817.22 is: 2,507.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,143.18 : 4,337.80 = 1,817.22 : x
  2. Step 2: Convert to fraction form
    3,143.18/4,337.80 = 1,817.22/x
  3. Step 3: Cross multiply
    3,143.18x = 4,337.80 × 1,817.22
  4. Step 4: Simplify right side
    3,143.18x = 7,882,736.92
  5. Step 5: Solve for x
    x = 7,882,736.92/3,143.18
  6. Step 6: Final answer
    x = 2,507.89

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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.