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Finding the Fourth Proportional to 4,757.85, 7,143.93 and 2,916.68

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Solution

The fourth proportional to 4,757.85, 7,143.93 and 2,916.68 is: 4,379.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,757.85 : 7,143.93 = 2,916.68 : x
  2. Step 2: Convert to fraction form
    4,757.85/7,143.93 = 2,916.68/x
  3. Step 3: Cross multiply
    4,757.85x = 7,143.93 × 2,916.68
  4. Step 4: Simplify right side
    4,757.85x = 20,836,522.03
  5. Step 5: Solve for x
    x = 20,836,522.03/4,757.85
  6. Step 6: Final answer
    x = 4,379.40

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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.