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Finding the Fourth Proportional to 7,808.00, 10,774.77 and 4,451.90

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Solution

The fourth proportional to 7,808.00, 10,774.77 and 4,451.90 is: 6,143.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,808.00 : 10,774.77 = 4,451.90 : x
  2. Step 2: Convert to fraction form
    7,808.00/10,774.77 = 4,451.90/x
  3. Step 3: Cross multiply
    7,808.00x = 10,774.77 × 4,451.90
  4. Step 4: Simplify right side
    7,808.00x = 47,968,148.20
  5. Step 5: Solve for x
    x = 47,968,148.20/7,808.00
  6. Step 6: Final answer
    x = 6,143.46

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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.