Home / 3,136.71-4,705.25-945.21

Finding the Fourth Proportional to 3,136.71, 4,705.25 and 945.21

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Solution

The fourth proportional to 3,136.71, 4,705.25 and 945.21 is: 1,417.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.71 : 4,705.25 = 945.21 : x
  2. Step 2: Convert to fraction form
    3,136.71/4,705.25 = 945.21/x
  3. Step 3: Cross multiply
    3,136.71x = 4,705.25 × 945.21
  4. Step 4: Simplify right side
    3,136.71x = 4,447,444.63
  5. Step 5: Solve for x
    x = 4,447,444.63/3,136.71
  6. Step 6: Final answer
    x = 1,417.87

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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.