Home / 2,815.16-3,885.08-1,620.52

Finding the Fourth Proportional to 2,815.16, 3,885.08 and 1,620.52

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Solution

The fourth proportional to 2,815.16, 3,885.08 and 1,620.52 is: 2,236.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.16 : 3,885.08 = 1,620.52 : x
  2. Step 2: Convert to fraction form
    2,815.16/3,885.08 = 1,620.52/x
  3. Step 3: Cross multiply
    2,815.16x = 3,885.08 × 1,620.52
  4. Step 4: Simplify right side
    2,815.16x = 6,295,832.03
  5. Step 5: Solve for x
    x = 6,295,832.03/2,815.16
  6. Step 6: Final answer
    x = 2,236.41

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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.