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Finding the Fourth Proportional to 7,899.68, 10,897.44 and 5,885.21

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Solution

The fourth proportional to 7,899.68, 10,897.44 and 5,885.21 is: 8,118.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,899.68 : 10,897.44 = 5,885.21 : x
  2. Step 2: Convert to fraction form
    7,899.68/10,897.44 = 5,885.21/x
  3. Step 3: Cross multiply
    7,899.68x = 10,897.44 × 5,885.21
  4. Step 4: Simplify right side
    7,899.68x = 64,133,668.38
  5. Step 5: Solve for x
    x = 64,133,668.38/7,899.68
  6. Step 6: Final answer
    x = 8,118.52

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Double scale
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Similar ratio
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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.