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Finding the Fourth Proportional to 7,961.64, 10,988.10 and 4,817.88

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Solution

The fourth proportional to 7,961.64, 10,988.10 and 4,817.88 is: 6,649.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,961.64 : 10,988.10 = 4,817.88 : x
  2. Step 2: Convert to fraction form
    7,961.64/10,988.10 = 4,817.88/x
  3. Step 3: Cross multiply
    7,961.64x = 10,988.10 × 4,817.88
  4. Step 4: Simplify right side
    7,961.64x = 52,939,347.23
  5. Step 5: Solve for x
    x = 52,939,347.23/7,961.64
  6. Step 6: Final answer
    x = 6,649.30

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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.