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Finding the Fourth Proportional to 7,897.48, 11,851.50 and 3,280.48

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Solution

The fourth proportional to 7,897.48, 11,851.50 and 3,280.48 is: 4,922.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,897.48 : 11,851.50 = 3,280.48 : x
  2. Step 2: Convert to fraction form
    7,897.48/11,851.50 = 3,280.48/x
  3. Step 3: Cross multiply
    7,897.48x = 11,851.50 × 3,280.48
  4. Step 4: Simplify right side
    7,897.48x = 38,878,608.72
  5. Step 5: Solve for x
    x = 38,878,608.72/7,897.48
  6. Step 6: Final answer
    x = 4,922.91

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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.