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Finding the Fourth Proportional to 5,323.56, 7,990.46 and 4,988.20

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Solution

The fourth proportional to 5,323.56, 7,990.46 and 4,988.20 is: 7,487.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,323.56 : 7,990.46 = 4,988.20 : x
  2. Step 2: Convert to fraction form
    5,323.56/7,990.46 = 4,988.20/x
  3. Step 3: Cross multiply
    5,323.56x = 7,990.46 × 4,988.20
  4. Step 4: Simplify right side
    5,323.56x = 39,858,012.57
  5. Step 5: Solve for x
    x = 39,858,012.57/5,323.56
  6. Step 6: Final answer
    x = 7,487.10

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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.