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Finding the Fourth Proportional to 8,351.07, 12,509.60 and 3,955.20

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Solution

The fourth proportional to 8,351.07, 12,509.60 and 3,955.20 is: 5,924.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,351.07 : 12,509.60 = 3,955.20 : x
  2. Step 2: Convert to fraction form
    8,351.07/12,509.60 = 3,955.20/x
  3. Step 3: Cross multiply
    8,351.07x = 12,509.60 × 3,955.20
  4. Step 4: Simplify right side
    8,351.07x = 49,477,950.14
  5. Step 5: Solve for x
    x = 49,477,950.14/8,351.07
  6. Step 6: Final answer
    x = 5,924.74

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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.