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Finding the Fourth Proportional to 7,865.88, 11,803.62 and 3,248.28

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Solution

The fourth proportional to 7,865.88, 11,803.62 and 3,248.28 is: 4,874.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,865.88 : 11,803.62 = 3,248.28 : x
  2. Step 2: Convert to fraction form
    7,865.88/11,803.62 = 3,248.28/x
  3. Step 3: Cross multiply
    7,865.88x = 11,803.62 × 3,248.28
  4. Step 4: Simplify right side
    7,865.88x = 38,341,462.77
  5. Step 5: Solve for x
    x = 38,341,462.77/7,865.88
  6. Step 6: Final answer
    x = 4,874.40

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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.