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Finding the Fourth Proportional to 4,612.77, 6,921.53 and 2,146.86

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Solution

The fourth proportional to 4,612.77, 6,921.53 and 2,146.86 is: 3,221.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,612.77 : 6,921.53 = 2,146.86 : x
  2. Step 2: Convert to fraction form
    4,612.77/6,921.53 = 2,146.86/x
  3. Step 3: Cross multiply
    4,612.77x = 6,921.53 × 2,146.86
  4. Step 4: Simplify right side
    4,612.77x = 14,859,555.90
  5. Step 5: Solve for x
    x = 14,859,555.90/4,612.77
  6. Step 6: Final answer
    x = 3,221.40

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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.