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Finding the Fourth Proportional to 2,098.30, 3,147.45 and 637.45

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Solution

The fourth proportional to 2,098.30, 3,147.45 and 637.45 is: 956.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,098.30 : 3,147.45 = 637.45 : x
  2. Step 2: Convert to fraction form
    2,098.30/3,147.45 = 637.45/x
  3. Step 3: Cross multiply
    2,098.30x = 3,147.45 × 637.45
  4. Step 4: Simplify right side
    2,098.30x = 2,006,342.00
  5. Step 5: Solve for x
    x = 2,006,342.00/2,098.30
  6. Step 6: Final answer
    x = 956.18

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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.