Home / 3,521.68-4,860.36-2,680.90

Finding the Fourth Proportional to 3,521.68, 4,860.36 and 2,680.90

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Solution

The fourth proportional to 3,521.68, 4,860.36 and 2,680.90 is: 3,699.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,521.68 : 4,860.36 = 2,680.90 : x
  2. Step 2: Convert to fraction form
    3,521.68/4,860.36 = 2,680.90/x
  3. Step 3: Cross multiply
    3,521.68x = 4,860.36 × 2,680.90
  4. Step 4: Simplify right side
    3,521.68x = 13,030,139.12
  5. Step 5: Solve for x
    x = 13,030,139.12/3,521.68
  6. Step 6: Final answer
    x = 3,699.98

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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.