Home / 2,136.70-2,948.76-1,252.57

Finding the Fourth Proportional to 2,136.70, 2,948.76 and 1,252.57

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Solution

The fourth proportional to 2,136.70, 2,948.76 and 1,252.57 is: 1,728.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,136.70 : 2,948.76 = 1,252.57 : x
  2. Step 2: Convert to fraction form
    2,136.70/2,948.76 = 1,252.57/x
  3. Step 3: Cross multiply
    2,136.70x = 2,948.76 × 1,252.57
  4. Step 4: Simplify right side
    2,136.70x = 3,693,528.31
  5. Step 5: Solve for x
    x = 3,693,528.31/2,136.70
  6. Step 6: Final answer
    x = 1,728.61

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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.