Home / 3,985.31-5,500.64-2,585.63

Finding the Fourth Proportional to 3,985.31, 5,500.64 and 2,585.63

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Solution

The fourth proportional to 3,985.31, 5,500.64 and 2,585.63 is: 3,568.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.31 : 5,500.64 = 2,585.63 : x
  2. Step 2: Convert to fraction form
    3,985.31/5,500.64 = 2,585.63/x
  3. Step 3: Cross multiply
    3,985.31x = 5,500.64 × 2,585.63
  4. Step 4: Simplify right side
    3,985.31x = 14,222,619.80
  5. Step 5: Solve for x
    x = 14,222,619.80/3,985.31
  6. Step 6: Final answer
    x = 3,568.76

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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.