Home / 3,815.05-5,264.74-2,136.45

Finding the Fourth Proportional to 3,815.05, 5,264.74 and 2,136.45

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Solution

The fourth proportional to 3,815.05, 5,264.74 and 2,136.45 is: 2,948.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815.05 : 5,264.74 = 2,136.45 : x
  2. Step 2: Convert to fraction form
    3,815.05/5,264.74 = 2,136.45/x
  3. Step 3: Cross multiply
    3,815.05x = 5,264.74 × 2,136.45
  4. Step 4: Simplify right side
    3,815.05x = 11,247,848.43
  5. Step 5: Solve for x
    x = 11,247,848.43/3,815.05
  6. Step 6: Final answer
    x = 2,948.29

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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.