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Finding the Fourth Proportional to 3,117.42, 4,674.48 and 925.86

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Solution

The fourth proportional to 3,117.42, 4,674.48 and 925.86 is: 1,388.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.42 : 4,674.48 = 925.86 : x
  2. Step 2: Convert to fraction form
    3,117.42/4,674.48 = 925.86/x
  3. Step 3: Cross multiply
    3,117.42x = 4,674.48 × 925.86
  4. Step 4: Simplify right side
    3,117.42x = 4,327,914.05
  5. Step 5: Solve for x
    x = 4,327,914.05/3,117.42
  6. Step 6: Final answer
    x = 1,388.30

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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.