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Finding the Fourth Proportional to 6,369.98, 9,554.96 and 1,987.44

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Solution

The fourth proportional to 6,369.98, 9,554.96 and 1,987.44 is: 2,981.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,369.98 : 9,554.96 = 1,987.44 : x
  2. Step 2: Convert to fraction form
    6,369.98/9,554.96 = 1,987.44/x
  3. Step 3: Cross multiply
    6,369.98x = 9,554.96 × 1,987.44
  4. Step 4: Simplify right side
    6,369.98x = 18,989,878.84
  5. Step 5: Solve for x
    x = 18,989,878.84/6,369.98
  6. Step 6: Final answer
    x = 2,981.15

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.