Home / 2,815.23-3,885.84-1,636.77

Finding the Fourth Proportional to 2,815.23, 3,885.84 and 1,636.77

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Solution

The fourth proportional to 2,815.23, 3,885.84 and 1,636.77 is: 2,259.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.23 : 3,885.84 = 1,636.77 : x
  2. Step 2: Convert to fraction form
    2,815.23/3,885.84 = 1,636.77/x
  3. Step 3: Cross multiply
    2,815.23x = 3,885.84 × 1,636.77
  4. Step 4: Simplify right side
    2,815.23x = 6,360,226.34
  5. Step 5: Solve for x
    x = 6,360,226.34/2,815.23
  6. Step 6: Final answer
    x = 2,259.22

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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.