Home / 3,539.84-4,885.44-2,421.92

Finding the Fourth Proportional to 3,539.84, 4,885.44 and 2,421.92

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Solution

The fourth proportional to 3,539.84, 4,885.44 and 2,421.92 is: 3,342.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,539.84 : 4,885.44 = 2,421.92 : x
  2. Step 2: Convert to fraction form
    3,539.84/4,885.44 = 2,421.92/x
  3. Step 3: Cross multiply
    3,539.84x = 4,885.44 × 2,421.92
  4. Step 4: Simplify right side
    3,539.84x = 11,832,144.84
  5. Step 5: Solve for x
    x = 11,832,144.84/3,539.84
  6. Step 6: Final answer
    x = 3,342.56

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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.