Home / 6,439.47-8,886.29-3,786.72

Finding the Fourth Proportional to 6,439.47, 8,886.29 and 3,786.72

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Solution

The fourth proportional to 6,439.47, 8,886.29 and 3,786.72 is: 5,225.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,439.47 : 8,886.29 = 3,786.72 : x
  2. Step 2: Convert to fraction form
    6,439.47/8,886.29 = 3,786.72/x
  3. Step 3: Cross multiply
    6,439.47x = 8,886.29 × 3,786.72
  4. Step 4: Simplify right side
    6,439.47x = 33,649,873.14
  5. Step 5: Solve for x
    x = 33,649,873.14/6,439.47
  6. Step 6: Final answer
    x = 5,225.57

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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.