Home / 3,618.69-5,428.04-1,670.64

Finding the Fourth Proportional to 3,618.69, 5,428.04 and 1,670.64

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Solution

The fourth proportional to 3,618.69, 5,428.04 and 1,670.64 is: 2,505.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.69 : 5,428.04 = 1,670.64 : x
  2. Step 2: Convert to fraction form
    3,618.69/5,428.04 = 1,670.64/x
  3. Step 3: Cross multiply
    3,618.69x = 5,428.04 × 1,670.64
  4. Step 4: Simplify right side
    3,618.69x = 9,068,292.39
  5. Step 5: Solve for x
    x = 9,068,292.39/3,618.69
  6. Step 6: Final answer
    x = 2,505.96

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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.