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Finding the Fourth Proportional to 5,988.49, 8,989.71 and 3,220.63

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Solution

The fourth proportional to 5,988.49, 8,989.71 and 3,220.63 is: 4,834.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,988.49 : 8,989.71 = 3,220.63 : x
  2. Step 2: Convert to fraction form
    5,988.49/8,989.71 = 3,220.63/x
  3. Step 3: Cross multiply
    5,988.49x = 8,989.71 × 3,220.63
  4. Step 4: Simplify right side
    5,988.49x = 28,952,529.72
  5. Step 5: Solve for x
    x = 28,952,529.72/5,988.49
  6. Step 6: Final answer
    x = 4,834.70

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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.