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Finding the Fourth Proportional to 5,276.58, 7,285 and 3,388.93

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Solution

The fourth proportional to 5,276.58, 7,285 and 3,388.93 is: 4,678.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,276.58 : 7,285 = 3,388.93 : x
  2. Step 2: Convert to fraction form
    5,276.58/7,285 = 3,388.93/x
  3. Step 3: Cross multiply
    5,276.58x = 7,285 × 3,388.93
  4. Step 4: Simplify right side
    5,276.58x = 24,688,355.05
  5. Step 5: Solve for x
    x = 24,688,355.05/5,276.58
  6. Step 6: Final answer
    x = 4,678.86

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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.