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Finding the Fourth Proportional to 7,296.78, 10,945.20 and 2,915.34

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Solution

The fourth proportional to 7,296.78, 10,945.20 and 2,915.34 is: 4,373.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,296.78 : 10,945.20 = 2,915.34 : x
  2. Step 2: Convert to fraction form
    7,296.78/10,945.20 = 2,915.34/x
  3. Step 3: Cross multiply
    7,296.78x = 10,945.20 × 2,915.34
  4. Step 4: Simplify right side
    7,296.78x = 31,908,979.37
  5. Step 5: Solve for x
    x = 31,908,979.37/7,296.78
  6. Step 6: Final answer
    x = 4,373.02

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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.