Home / 3,557.25-4,909.24-1,985.38

Finding the Fourth Proportional to 3,557.25, 4,909.24 and 1,985.38

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Solution

The fourth proportional to 3,557.25, 4,909.24 and 1,985.38 is: 2,739.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,557.25 : 4,909.24 = 1,985.38 : x
  2. Step 2: Convert to fraction form
    3,557.25/4,909.24 = 1,985.38/x
  3. Step 3: Cross multiply
    3,557.25x = 4,909.24 × 1,985.38
  4. Step 4: Simplify right side
    3,557.25x = 9,746,697.12
  5. Step 5: Solve for x
    x = 9,746,697.12/3,557.25
  6. Step 6: Final answer
    x = 2,739.95

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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.