Home / 3,557.12-4,909.29-1,985.54

Finding the Fourth Proportional to 3,557.12, 4,909.29 and 1,985.54

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Solution

The fourth proportional to 3,557.12, 4,909.29 and 1,985.54 is: 2,740.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,557.12 : 4,909.29 = 1,985.54 : x
  2. Step 2: Convert to fraction form
    3,557.12/4,909.29 = 1,985.54/x
  3. Step 3: Cross multiply
    3,557.12x = 4,909.29 × 1,985.54
  4. Step 4: Simplify right side
    3,557.12x = 9,747,591.67
  5. Step 5: Solve for x
    x = 9,747,591.67/3,557.12
  6. Step 6: Final answer
    x = 2,740.30

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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.