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Finding the Fourth Proportional to 2,917.56, 4,373.76 and 1,994.88

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Solution

The fourth proportional to 2,917.56, 4,373.76 and 1,994.88 is: 2,990.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,917.56 : 4,373.76 = 1,994.88 : x
  2. Step 2: Convert to fraction form
    2,917.56/4,373.76 = 1,994.88/x
  3. Step 3: Cross multiply
    2,917.56x = 4,373.76 × 1,994.88
  4. Step 4: Simplify right side
    2,917.56x = 8,725,126.35
  5. Step 5: Solve for x
    x = 8,725,126.35/2,917.56
  6. Step 6: Final answer
    x = 2,990.56

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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.