Home / 2,136.32-2,948.16-1,308.80

Finding the Fourth Proportional to 2,136.32, 2,948.16 and 1,308.80

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Solution

The fourth proportional to 2,136.32, 2,948.16 and 1,308.80 is: 1,806.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,136.32 : 2,948.16 = 1,308.80 : x
  2. Step 2: Convert to fraction form
    2,136.32/2,948.16 = 1,308.80/x
  3. Step 3: Cross multiply
    2,136.32x = 2,948.16 × 1,308.80
  4. Step 4: Simplify right side
    2,136.32x = 3,858,551.81
  5. Step 5: Solve for x
    x = 3,858,551.81/2,136.32
  6. Step 6: Final answer
    x = 1,806.17

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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.