Home / 2,845.38-3,925.53-2,101.12

Finding the Fourth Proportional to 2,845.38, 3,925.53 and 2,101.12

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Solution

The fourth proportional to 2,845.38, 3,925.53 and 2,101.12 is: 2,898.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,845.38 : 3,925.53 = 2,101.12 : x
  2. Step 2: Convert to fraction form
    2,845.38/3,925.53 = 2,101.12/x
  3. Step 3: Cross multiply
    2,845.38x = 3,925.53 × 2,101.12
  4. Step 4: Simplify right side
    2,845.38x = 8,248,009.59
  5. Step 5: Solve for x
    x = 8,248,009.59/2,845.38
  6. Step 6: Final answer
    x = 2,898.74

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Half scale
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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.