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Finding the Fourth Proportional to 6,642.54, 9,942.18 and 4,887.10

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Solution

The fourth proportional to 6,642.54, 9,942.18 and 4,887.10 is: 7,314.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642.54 : 9,942.18 = 4,887.10 : x
  2. Step 2: Convert to fraction form
    6,642.54/9,942.18 = 4,887.10/x
  3. Step 3: Cross multiply
    6,642.54x = 9,942.18 × 4,887.10
  4. Step 4: Simplify right side
    6,642.54x = 48,588,421.98
  5. Step 5: Solve for x
    x = 48,588,421.98/6,642.54
  6. Step 6: Final answer
    x = 7,314.74

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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.