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Finding the Fourth Proportional to 3,145.96, 4,717.81 and 924.18

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Solution

The fourth proportional to 3,145.96, 4,717.81 and 924.18 is: 1,385.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.96 : 4,717.81 = 924.18 : x
  2. Step 2: Convert to fraction form
    3,145.96/4,717.81 = 924.18/x
  3. Step 3: Cross multiply
    3,145.96x = 4,717.81 × 924.18
  4. Step 4: Simplify right side
    3,145.96x = 4,360,105.65
  5. Step 5: Solve for x
    x = 4,360,105.65/3,145.96
  6. Step 6: Final answer
    x = 1,385.94

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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.