Home / 3,618.05-5,427.32-1,309.25

Finding the Fourth Proportional to 3,618.05, 5,427.32 and 1,309.25

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Solution

The fourth proportional to 3,618.05, 5,427.32 and 1,309.25 is: 1,963.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.05 : 5,427.32 = 1,309.25 : x
  2. Step 2: Convert to fraction form
    3,618.05/5,427.32 = 1,309.25/x
  3. Step 3: Cross multiply
    3,618.05x = 5,427.32 × 1,309.25
  4. Step 4: Simplify right side
    3,618.05x = 7,105,718.71
  5. Step 5: Solve for x
    x = 7,105,718.71/3,618.05
  6. Step 6: Final answer
    x = 1,963.96

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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.