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Finding the Fourth Proportional to 3,210.72, 4,816.05 and 902.22

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Solution

The fourth proportional to 3,210.72, 4,816.05 and 902.22 is: 1,353.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,210.72 : 4,816.05 = 902.22 : x
  2. Step 2: Convert to fraction form
    3,210.72/4,816.05 = 902.22/x
  3. Step 3: Cross multiply
    3,210.72x = 4,816.05 × 902.22
  4. Step 4: Simplify right side
    3,210.72x = 4,345,136.63
  5. Step 5: Solve for x
    x = 4,345,136.63/3,210.72
  6. Step 6: Final answer
    x = 1,353.32

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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.