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Finding the Fourth Proportional to 5,275.87, 7,280.89 and 2,918.03

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Solution

The fourth proportional to 5,275.87, 7,280.89 and 2,918.03 is: 4,026.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,275.87 : 7,280.89 = 2,918.03 : x
  2. Step 2: Convert to fraction form
    5,275.87/7,280.89 = 2,918.03/x
  3. Step 3: Cross multiply
    5,275.87x = 7,280.89 × 2,918.03
  4. Step 4: Simplify right side
    5,275.87x = 21,245,811.75
  5. Step 5: Solve for x
    x = 21,245,811.75/5,275.87
  6. Step 6: Final answer
    x = 4,026.98

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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.