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Finding the Fourth Proportional to 3,243.34, 4,864.05 and 902.80

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Solution

The fourth proportional to 3,243.34, 4,864.05 and 902.80 is: 1,353.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,243.34 : 4,864.05 = 902.80 : x
  2. Step 2: Convert to fraction form
    3,243.34/4,864.05 = 902.80/x
  3. Step 3: Cross multiply
    3,243.34x = 4,864.05 × 902.80
  4. Step 4: Simplify right side
    3,243.34x = 4,391,264.34
  5. Step 5: Solve for x
    x = 4,391,264.34/3,243.34
  6. Step 6: Final answer
    x = 1,353.93

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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.