Home / 3,689.19-5,528.39-2,911.10

Finding the Fourth Proportional to 3,689.19, 5,528.39 and 2,911.10

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Solution

The fourth proportional to 3,689.19, 5,528.39 and 2,911.10 is: 4,362.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,689.19 : 5,528.39 = 2,911.10 : x
  2. Step 2: Convert to fraction form
    3,689.19/5,528.39 = 2,911.10/x
  3. Step 3: Cross multiply
    3,689.19x = 5,528.39 × 2,911.10
  4. Step 4: Simplify right side
    3,689.19x = 16,093,653.93
  5. Step 5: Solve for x
    x = 16,093,653.93/3,689.19
  6. Step 6: Final answer
    x = 4,362.38

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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.