Home / 3,476.80-5,215.28-1,136.80

Finding the Fourth Proportional to 3,476.80, 5,215.28 and 1,136.80

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Solution

The fourth proportional to 3,476.80, 5,215.28 and 1,136.80 is: 1,705.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,476.80 : 5,215.28 = 1,136.80 : x
  2. Step 2: Convert to fraction form
    3,476.80/5,215.28 = 1,136.80/x
  3. Step 3: Cross multiply
    3,476.80x = 5,215.28 × 1,136.80
  4. Step 4: Simplify right side
    3,476.80x = 5,928,730.30
  5. Step 5: Solve for x
    x = 5,928,730.30/3,476.80
  6. Step 6: Final answer
    x = 1,705.23

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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.