Home / 5,114.20-7,671.30-4,239.40

Finding the Fourth Proportional to 5,114.20, 7,671.30 and 4,239.40

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Solution

The fourth proportional to 5,114.20, 7,671.30 and 4,239.40 is: 6,359.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,114.20 : 7,671.30 = 4,239.40 : x
  2. Step 2: Convert to fraction form
    5,114.20/7,671.30 = 4,239.40/x
  3. Step 3: Cross multiply
    5,114.20x = 7,671.30 × 4,239.40
  4. Step 4: Simplify right side
    5,114.20x = 32,521,709.22
  5. Step 5: Solve for x
    x = 32,521,709.22/5,114.20
  6. Step 6: Final answer
    x = 6,359.10

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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.