Home / 3,618.85-5,428.21-1,153.63

Finding the Fourth Proportional to 3,618.85, 5,428.21 and 1,153.63

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Solution

The fourth proportional to 3,618.85, 5,428.21 and 1,153.63 is: 1,730.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.85 : 5,428.21 = 1,153.63 : x
  2. Step 2: Convert to fraction form
    3,618.85/5,428.21 = 1,153.63/x
  3. Step 3: Cross multiply
    3,618.85x = 5,428.21 × 1,153.63
  4. Step 4: Simplify right side
    3,618.85x = 6,262,145.90
  5. Step 5: Solve for x
    x = 6,262,145.90/3,618.85
  6. Step 6: Final answer
    x = 1,730.42

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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.