Home / 3,557.12-4,908.60-1,985.31

Finding the Fourth Proportional to 3,557.12, 4,908.60 and 1,985.31

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Solution

The fourth proportional to 3,557.12, 4,908.60 and 1,985.31 is: 2,739.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,557.12 : 4,908.60 = 1,985.31 : x
  2. Step 2: Convert to fraction form
    3,557.12/4,908.60 = 1,985.31/x
  3. Step 3: Cross multiply
    3,557.12x = 4,908.60 × 1,985.31
  4. Step 4: Simplify right side
    3,557.12x = 9,745,092.67
  5. Step 5: Solve for x
    x = 9,745,092.67/3,557.12
  6. Step 6: Final answer
    x = 2,739.61

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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.