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Finding the Fourth Proportional to 3,603.34, 4,972.68 and 1,988.30

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Solution

The fourth proportional to 3,603.34, 4,972.68 and 1,988.30 is: 2,743.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,603.34 : 4,972.68 = 1,988.30 : x
  2. Step 2: Convert to fraction form
    3,603.34/4,972.68 = 1,988.30/x
  3. Step 3: Cross multiply
    3,603.34x = 4,972.68 × 1,988.30
  4. Step 4: Simplify right side
    3,603.34x = 9,887,179.64
  5. Step 5: Solve for x
    x = 9,887,179.64/3,603.34
  6. Step 6: Final answer
    x = 2,743.89

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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.