Home / 3,708.64-5,118.16-2,136.80

Finding the Fourth Proportional to 3,708.64, 5,118.16 and 2,136.80

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Solution

The fourth proportional to 3,708.64, 5,118.16 and 2,136.80 is: 2,948.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,708.64 : 5,118.16 = 2,136.80 : x
  2. Step 2: Convert to fraction form
    3,708.64/5,118.16 = 2,136.80/x
  3. Step 3: Cross multiply
    3,708.64x = 5,118.16 × 2,136.80
  4. Step 4: Simplify right side
    3,708.64x = 10,936,484.29
  5. Step 5: Solve for x
    x = 10,936,484.29/3,708.64
  6. Step 6: Final answer
    x = 2,948.92

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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.