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Finding the Fourth Proportional to 5,321.07, 7,980.54 and 5,057.61

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Solution

The fourth proportional to 5,321.07, 7,980.54 and 5,057.61 is: 7,585.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,321.07 : 7,980.54 = 5,057.61 : x
  2. Step 2: Convert to fraction form
    5,321.07/7,980.54 = 5,057.61/x
  3. Step 3: Cross multiply
    5,321.07x = 7,980.54 × 5,057.61
  4. Step 4: Simplify right side
    5,321.07x = 40,362,458.91
  5. Step 5: Solve for x
    x = 40,362,458.91/5,321.07
  6. Step 6: Final answer
    x = 7,585.40

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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.