Home / 3,115.60-4,673.40-2,896.90

Finding the Fourth Proportional to 3,115.60, 4,673.40 and 2,896.90

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Solution

The fourth proportional to 3,115.60, 4,673.40 and 2,896.90 is: 4,345.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.60 : 4,673.40 = 2,896.90 : x
  2. Step 2: Convert to fraction form
    3,115.60/4,673.40 = 2,896.90/x
  3. Step 3: Cross multiply
    3,115.60x = 4,673.40 × 2,896.90
  4. Step 4: Simplify right side
    3,115.60x = 13,538,372.46
  5. Step 5: Solve for x
    x = 13,538,372.46/3,115.60
  6. Step 6: Final answer
    x = 4,345.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.