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Finding the Fourth Proportional to 7,893.16, 10,886.53 and 4,909.12

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Solution

The fourth proportional to 7,893.16, 10,886.53 and 4,909.12 is: 6,770.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,893.16 : 10,886.53 = 4,909.12 : x
  2. Step 2: Convert to fraction form
    7,893.16/10,886.53 = 4,909.12/x
  3. Step 3: Cross multiply
    7,893.16x = 10,886.53 × 4,909.12
  4. Step 4: Simplify right side
    7,893.16x = 53,443,282.15
  5. Step 5: Solve for x
    x = 53,443,282.15/7,893.16
  6. Step 6: Final answer
    x = 6,770.83

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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.