Home / 7,089.78-10,631.40-2,158.32

Finding the Fourth Proportional to 7,089.78, 10,631.40 and 2,158.32

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Solution

The fourth proportional to 7,089.78, 10,631.40 and 2,158.32 is: 3,236.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,089.78 : 10,631.40 = 2,158.32 : x
  2. Step 2: Convert to fraction form
    7,089.78/10,631.40 = 2,158.32/x
  3. Step 3: Cross multiply
    7,089.78x = 10,631.40 × 2,158.32
  4. Step 4: Simplify right side
    7,089.78x = 22,945,963.25
  5. Step 5: Solve for x
    x = 22,945,963.25/7,089.78
  6. Step 6: Final answer
    x = 3,236.48

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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.