Home / 3,618.39-5,428.40-1,153.35

Finding the Fourth Proportional to 3,618.39, 5,428.40 and 1,153.35

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Solution

The fourth proportional to 3,618.39, 5,428.40 and 1,153.35 is: 1,730.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.39 : 5,428.40 = 1,153.35 : x
  2. Step 2: Convert to fraction form
    3,618.39/5,428.40 = 1,153.35/x
  3. Step 3: Cross multiply
    3,618.39x = 5,428.40 × 1,153.35
  4. Step 4: Simplify right side
    3,618.39x = 6,260,845.14
  5. Step 5: Solve for x
    x = 6,260,845.14/3,618.39
  6. Step 6: Final answer
    x = 1,730.28

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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.