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Finding the Fourth Proportional to 8,777.99, 13,172.18 and 3,235.21

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Solution

The fourth proportional to 8,777.99, 13,172.18 and 3,235.21 is: 4,854.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,777.99 : 13,172.18 = 3,235.21 : x
  2. Step 2: Convert to fraction form
    8,777.99/13,172.18 = 3,235.21/x
  3. Step 3: Cross multiply
    8,777.99x = 13,172.18 × 3,235.21
  4. Step 4: Simplify right side
    8,777.99x = 42,614,719.35
  5. Step 5: Solve for x
    x = 42,614,719.35/8,777.99
  6. Step 6: Final answer
    x = 4,854.72

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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.