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Finding the Fourth Proportional to 5,671.72, 7,823.46 and 3,313

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Solution

The fourth proportional to 5,671.72, 7,823.46 and 3,313 is: 4,569.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,671.72 : 7,823.46 = 3,313 : x
  2. Step 2: Convert to fraction form
    5,671.72/7,823.46 = 3,313/x
  3. Step 3: Cross multiply
    5,671.72x = 7,823.46 × 3,313
  4. Step 4: Simplify right side
    5,671.72x = 25,919,122.98
  5. Step 5: Solve for x
    x = 25,919,122.98/5,671.72
  6. Step 6: Final answer
    x = 4,569.89

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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.