Home / 4,247.20-6,358.20-3,156.40

Finding the Fourth Proportional to 4,247.20, 6,358.20 and 3,156.40

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Solution

The fourth proportional to 4,247.20, 6,358.20 and 3,156.40 is: 4,725.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,247.20 : 6,358.20 = 3,156.40 : x
  2. Step 2: Convert to fraction form
    4,247.20/6,358.20 = 3,156.40/x
  3. Step 3: Cross multiply
    4,247.20x = 6,358.20 × 3,156.40
  4. Step 4: Simplify right side
    4,247.20x = 20,069,022.48
  5. Step 5: Solve for x
    x = 20,069,022.48/4,247.20
  6. Step 6: Final answer
    x = 4,725.24

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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.