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Finding the Fourth Proportional to 7,915.08, 10,918.80 and 7,352.27

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Solution

The fourth proportional to 7,915.08, 10,918.80 and 7,352.27 is: 10,142.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,915.08 : 10,918.80 = 7,352.27 : x
  2. Step 2: Convert to fraction form
    7,915.08/10,918.80 = 7,352.27/x
  3. Step 3: Cross multiply
    7,915.08x = 10,918.80 × 7,352.27
  4. Step 4: Simplify right side
    7,915.08x = 80,277,911.08
  5. Step 5: Solve for x
    x = 80,277,911.08/7,915.08
  6. Step 6: Final answer
    x = 10,142.40

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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.