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Finding the Fourth Proportional to 2,097.85, 3,146.76 and 637

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Solution

The fourth proportional to 2,097.85, 3,146.76 and 637 is: 955.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,097.85 : 3,146.76 = 637 : x
  2. Step 2: Convert to fraction form
    2,097.85/3,146.76 = 637/x
  3. Step 3: Cross multiply
    2,097.85x = 3,146.76 × 637
  4. Step 4: Simplify right side
    2,097.85x = 2,004,486.12
  5. Step 5: Solve for x
    x = 2,004,486.12/2,097.85
  6. Step 6: Final answer
    x = 955.50

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Double scale
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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.