Home / 5,649.20-7,795.90-3,131.35

Finding the Fourth Proportional to 5,649.20, 7,795.90 and 3,131.35

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Solution

The fourth proportional to 5,649.20, 7,795.90 and 3,131.35 is: 4,321.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,649.20 : 7,795.90 = 3,131.35 : x
  2. Step 2: Convert to fraction form
    5,649.20/7,795.90 = 3,131.35/x
  3. Step 3: Cross multiply
    5,649.20x = 7,795.90 × 3,131.35
  4. Step 4: Simplify right side
    5,649.20x = 24,411,652.49
  5. Step 5: Solve for x
    x = 24,411,652.49/5,649.20
  6. Step 6: Final answer
    x = 4,321.26

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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.