Home / 6,143.71-8,478.30-3,349.21

Finding the Fourth Proportional to 6,143.71, 8,478.30 and 3,349.21

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Solution

The fourth proportional to 6,143.71, 8,478.30 and 3,349.21 is: 4,621.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,143.71 : 8,478.30 = 3,349.21 : x
  2. Step 2: Convert to fraction form
    6,143.71/8,478.30 = 3,349.21/x
  3. Step 3: Cross multiply
    6,143.71x = 8,478.30 × 3,349.21
  4. Step 4: Simplify right side
    6,143.71x = 28,395,607.14
  5. Step 5: Solve for x
    x = 28,395,607.14/6,143.71
  6. Step 6: Final answer
    x = 4,621.90

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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.