Home / 1,555.08-2,331.78-968.64

Finding the Fourth Proportional to 1,555.08, 2,331.78 and 968.64

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Solution

The fourth proportional to 1,555.08, 2,331.78 and 968.64 is: 1,452.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.08 : 2,331.78 = 968.64 : x
  2. Step 2: Convert to fraction form
    1,555.08/2,331.78 = 968.64/x
  3. Step 3: Cross multiply
    1,555.08x = 2,331.78 × 968.64
  4. Step 4: Simplify right side
    1,555.08x = 2,258,655.38
  5. Step 5: Solve for x
    x = 2,258,655.38/1,555.08
  6. Step 6: Final answer
    x = 1,452.44

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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.