Home / 3,985.51-5,499.40-2,307.09

Finding the Fourth Proportional to 3,985.51, 5,499.40 and 2,307.09

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Solution

The fourth proportional to 3,985.51, 5,499.40 and 2,307.09 is: 3,183.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.51 : 5,499.40 = 2,307.09 : x
  2. Step 2: Convert to fraction form
    3,985.51/5,499.40 = 2,307.09/x
  3. Step 3: Cross multiply
    3,985.51x = 5,499.40 × 2,307.09
  4. Step 4: Simplify right side
    3,985.51x = 12,687,610.75
  5. Step 5: Solve for x
    x = 12,687,610.75/3,985.51
  6. Step 6: Final answer
    x = 3,183.43

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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.