Home / 6,447.06-8,899.74-3,929.99

Finding the Fourth Proportional to 6,447.06, 8,899.74 and 3,929.99

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Solution

The fourth proportional to 6,447.06, 8,899.74 and 3,929.99 is: 5,425.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,447.06 : 8,899.74 = 3,929.99 : x
  2. Step 2: Convert to fraction form
    6,447.06/8,899.74 = 3,929.99/x
  3. Step 3: Cross multiply
    6,447.06x = 8,899.74 × 3,929.99
  4. Step 4: Simplify right side
    6,447.06x = 34,975,844.70
  5. Step 5: Solve for x
    x = 34,975,844.70/6,447.06
  6. Step 6: Final answer
    x = 5,425.08

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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.