Home / 3,478.58-4,799.24-1,985.42

Finding the Fourth Proportional to 3,478.58, 4,799.24 and 1,985.42

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Solution

The fourth proportional to 3,478.58, 4,799.24 and 1,985.42 is: 2,739.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.58 : 4,799.24 = 1,985.42 : x
  2. Step 2: Convert to fraction form
    3,478.58/4,799.24 = 1,985.42/x
  3. Step 3: Cross multiply
    3,478.58x = 4,799.24 × 1,985.42
  4. Step 4: Simplify right side
    3,478.58x = 9,528,507.08
  5. Step 5: Solve for x
    x = 9,528,507.08/3,478.58
  6. Step 6: Final answer
    x = 2,739.19

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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.