Home / 2,815.07-3,885.28-1,636.83

Finding the Fourth Proportional to 2,815.07, 3,885.28 and 1,636.83

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Solution

The fourth proportional to 2,815.07, 3,885.28 and 1,636.83 is: 2,259.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.07 : 3,885.28 = 1,636.83 : x
  2. Step 2: Convert to fraction form
    2,815.07/3,885.28 = 1,636.83/x
  3. Step 3: Cross multiply
    2,815.07x = 3,885.28 × 1,636.83
  4. Step 4: Simplify right side
    2,815.07x = 6,359,542.86
  5. Step 5: Solve for x
    x = 6,359,542.86/2,815.07
  6. Step 6: Final answer
    x = 2,259.11

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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.