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Finding the Fourth Proportional to 7,280.84, 10,921.97 and 2,897.33

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Solution

The fourth proportional to 7,280.84, 10,921.97 and 2,897.33 is: 4,346.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,280.84 : 10,921.97 = 2,897.33 : x
  2. Step 2: Convert to fraction form
    7,280.84/10,921.97 = 2,897.33/x
  3. Step 3: Cross multiply
    7,280.84x = 10,921.97 × 2,897.33
  4. Step 4: Simplify right side
    7,280.84x = 31,644,551.34
  5. Step 5: Solve for x
    x = 31,644,551.34/7,280.84
  6. Step 6: Final answer
    x = 4,346.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.