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Finding the Fourth Proportional to 5,661.52, 7,810.76 and 4,172.99

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Solution

The fourth proportional to 5,661.52, 7,810.76 and 4,172.99 is: 5,757.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,661.52 : 7,810.76 = 4,172.99 : x
  2. Step 2: Convert to fraction form
    5,661.52/7,810.76 = 4,172.99/x
  3. Step 3: Cross multiply
    5,661.52x = 7,810.76 × 4,172.99
  4. Step 4: Simplify right side
    5,661.52x = 32,594,194.75
  5. Step 5: Solve for x
    x = 32,594,194.75/5,661.52
  6. Step 6: Final answer
    x = 5,757.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.