Home / 3,557.76-4,909.40-1,985.54

Finding the Fourth Proportional to 3,557.76, 4,909.40 and 1,985.54

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Solution

The fourth proportional to 3,557.76, 4,909.40 and 1,985.54 is: 2,739.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,557.76 : 4,909.40 = 1,985.54 : x
  2. Step 2: Convert to fraction form
    3,557.76/4,909.40 = 1,985.54/x
  3. Step 3: Cross multiply
    3,557.76x = 4,909.40 × 1,985.54
  4. Step 4: Simplify right side
    3,557.76x = 9,747,810.08
  5. Step 5: Solve for x
    x = 9,747,810.08/3,557.76
  6. Step 6: Final answer
    x = 2,739.87

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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.