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Finding the Fourth Proportional to 6,372.84, 9,560.92 and 1,990.10

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Solution

The fourth proportional to 6,372.84, 9,560.92 and 1,990.10 is: 2,985.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,372.84 : 9,560.92 = 1,990.10 : x
  2. Step 2: Convert to fraction form
    6,372.84/9,560.92 = 1,990.10/x
  3. Step 3: Cross multiply
    6,372.84x = 9,560.92 × 1,990.10
  4. Step 4: Simplify right side
    6,372.84x = 19,027,186.89
  5. Step 5: Solve for x
    x = 19,027,186.89/6,372.84
  6. Step 6: Final answer
    x = 2,985.67

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Double scale
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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.