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Finding the Fourth Proportional to 5,875.20, 8,755.20 and 5,356.80

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Solution

The fourth proportional to 5,875.20, 8,755.20 and 5,356.80 is: 7,982.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,875.20 : 8,755.20 = 5,356.80 : x
  2. Step 2: Convert to fraction form
    5,875.20/8,755.20 = 5,356.80/x
  3. Step 3: Cross multiply
    5,875.20x = 8,755.20 × 5,356.80
  4. Step 4: Simplify right side
    5,875.20x = 46,899,855.36
  5. Step 5: Solve for x
    x = 46,899,855.36/5,875.20
  6. Step 6: Final answer
    x = 7,982.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.