Home / 3,136.50-4,704.75-945.18

Finding the Fourth Proportional to 3,136.50, 4,704.75 and 945.18

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Solution

The fourth proportional to 3,136.50, 4,704.75 and 945.18 is: 1,417.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.50 : 4,704.75 = 945.18 : x
  2. Step 2: Convert to fraction form
    3,136.50/4,704.75 = 945.18/x
  3. Step 3: Cross multiply
    3,136.50x = 4,704.75 × 945.18
  4. Step 4: Simplify right side
    3,136.50x = 4,446,835.61
  5. Step 5: Solve for x
    x = 4,446,835.61/3,136.50
  6. Step 6: Final answer
    x = 1,417.77

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Double scale
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Similar ratio
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1.5x scale

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.