Home / 3,985.57-5,500.20-2,307.51

Finding the Fourth Proportional to 3,985.57, 5,500.20 and 2,307.51

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Solution

The fourth proportional to 3,985.57, 5,500.20 and 2,307.51 is: 3,184.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.57 : 5,500.20 = 2,307.51 : x
  2. Step 2: Convert to fraction form
    3,985.57/5,500.20 = 2,307.51/x
  3. Step 3: Cross multiply
    3,985.57x = 5,500.20 × 2,307.51
  4. Step 4: Simplify right side
    3,985.57x = 12,691,766.50
  5. Step 5: Solve for x
    x = 12,691,766.50/3,985.57
  6. Step 6: Final answer
    x = 3,184.43

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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.