Home / 8,390.02-12,590.70-3,195.76

Finding the Fourth Proportional to 8,390.02, 12,590.70 and 3,195.76

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Solution

The fourth proportional to 8,390.02, 12,590.70 and 3,195.76 is: 4,795.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,390.02 : 12,590.70 = 3,195.76 : x
  2. Step 2: Convert to fraction form
    8,390.02/12,590.70 = 3,195.76/x
  3. Step 3: Cross multiply
    8,390.02x = 12,590.70 × 3,195.76
  4. Step 4: Simplify right side
    8,390.02x = 40,236,855.43
  5. Step 5: Solve for x
    x = 40,236,855.43/8,390.02
  6. Step 6: Final answer
    x = 4,795.80

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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.