Home / 2,815.53-3,885.30-1,636.62

Finding the Fourth Proportional to 2,815.53, 3,885.30 and 1,636.62

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Solution

The fourth proportional to 2,815.53, 3,885.30 and 1,636.62 is: 2,258.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.53 : 3,885.30 = 1,636.62 : x
  2. Step 2: Convert to fraction form
    2,815.53/3,885.30 = 1,636.62/x
  3. Step 3: Cross multiply
    2,815.53x = 3,885.30 × 1,636.62
  4. Step 4: Simplify right side
    2,815.53x = 6,358,759.69
  5. Step 5: Solve for x
    x = 6,358,759.69/2,815.53
  6. Step 6: Final answer
    x = 2,258.46

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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.