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Finding the Fourth Proportional to 5,629.20, 8,445.80 and 5,629.20

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Solution

The fourth proportional to 5,629.20, 8,445.80 and 5,629.20 is: 8,445.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,629.20 : 8,445.80 = 5,629.20 : x
  2. Step 2: Convert to fraction form
    5,629.20/8,445.80 = 5,629.20/x
  3. Step 3: Cross multiply
    5,629.20x = 8,445.80 × 5,629.20
  4. Step 4: Simplify right side
    5,629.20x = 47,543,097.36
  5. Step 5: Solve for x
    x = 47,543,097.36/5,629.20
  6. Step 6: Final answer
    x = 8,445.80

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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.