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Finding the Fourth Proportional to 4,998.38, 6,897.76 and 2,790.38

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Solution

The fourth proportional to 4,998.38, 6,897.76 and 2,790.38 is: 3,850.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,998.38 : 6,897.76 = 2,790.38 : x
  2. Step 2: Convert to fraction form
    4,998.38/6,897.76 = 2,790.38/x
  3. Step 3: Cross multiply
    4,998.38x = 6,897.76 × 2,790.38
  4. Step 4: Simplify right side
    4,998.38x = 19,247,330.08
  5. Step 5: Solve for x
    x = 19,247,330.08/4,998.38
  6. Step 6: Final answer
    x = 3,850.72

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Half scale
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Double 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.