Home / 3,557.40-4,909.28-1,985.44

Finding the Fourth Proportional to 3,557.40, 4,909.28 and 1,985.44

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Solution

The fourth proportional to 3,557.40, 4,909.28 and 1,985.44 is: 2,739.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,557.40 : 4,909.28 = 1,985.44 : x
  2. Step 2: Convert to fraction form
    3,557.40/4,909.28 = 1,985.44/x
  3. Step 3: Cross multiply
    3,557.40x = 4,909.28 × 1,985.44
  4. Step 4: Simplify right side
    3,557.40x = 9,747,080.88
  5. Step 5: Solve for x
    x = 9,747,080.88/3,557.40
  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.