Home / 6,386.02-8,811.69-3,867.70

Finding the Fourth Proportional to 6,386.02, 8,811.69 and 3,867.70

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Solution

The fourth proportional to 6,386.02, 8,811.69 and 3,867.70 is: 5,336.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,386.02 : 8,811.69 = 3,867.70 : x
  2. Step 2: Convert to fraction form
    6,386.02/8,811.69 = 3,867.70/x
  3. Step 3: Cross multiply
    6,386.02x = 8,811.69 × 3,867.70
  4. Step 4: Simplify right side
    6,386.02x = 34,080,973.41
  5. Step 5: Solve for x
    x = 34,080,973.41/6,386.02
  6. Step 6: Final answer
    x = 5,336.81

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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.