Home / 8,237.10-12,367.80-6,390.30

Finding the Fourth Proportional to 8,237.10, 12,367.80 and 6,390.30

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Solution

The fourth proportional to 8,237.10, 12,367.80 and 6,390.30 is: 9,594.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,237.10 : 12,367.80 = 6,390.30 : x
  2. Step 2: Convert to fraction form
    8,237.10/12,367.80 = 6,390.30/x
  3. Step 3: Cross multiply
    8,237.10x = 12,367.80 × 6,390.30
  4. Step 4: Simplify right side
    8,237.10x = 79,033,952.34
  5. Step 5: Solve for x
    x = 79,033,952.34/8,237.10
  6. Step 6: Final answer
    x = 9,594.88

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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.