Home / 5,618.40-8,421.12-3,302.88

Finding the Fourth Proportional to 5,618.40, 8,421.12 and 3,302.88

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Solution

The fourth proportional to 5,618.40, 8,421.12 and 3,302.88 is: 4,950.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,618.40 : 8,421.12 = 3,302.88 : x
  2. Step 2: Convert to fraction form
    5,618.40/8,421.12 = 3,302.88/x
  3. Step 3: Cross multiply
    5,618.40x = 8,421.12 × 3,302.88
  4. Step 4: Simplify right side
    5,618.40x = 27,813,948.83
  5. Step 5: Solve for x
    x = 27,813,948.83/5,618.40
  6. Step 6: Final answer
    x = 4,950.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.