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Finding the Fourth Proportional to 2,655.39, 3,984.68 and 925.23

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Solution

The fourth proportional to 2,655.39, 3,984.68 and 925.23 is: 1,388.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,655.39 : 3,984.68 = 925.23 : x
  2. Step 2: Convert to fraction form
    2,655.39/3,984.68 = 925.23/x
  3. Step 3: Cross multiply
    2,655.39x = 3,984.68 × 925.23
  4. Step 4: Simplify right side
    2,655.39x = 3,686,745.48
  5. Step 5: Solve for x
    x = 3,686,745.48/2,655.39
  6. Step 6: Final answer
    x = 1,388.40

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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.