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Finding the Fourth Proportional to 2,803.76, 3,869.22 and 1,756.44

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Solution

The fourth proportional to 2,803.76, 3,869.22 and 1,756.44 is: 2,423.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,803.76 : 3,869.22 = 1,756.44 : x
  2. Step 2: Convert to fraction form
    2,803.76/3,869.22 = 1,756.44/x
  3. Step 3: Cross multiply
    2,803.76x = 3,869.22 × 1,756.44
  4. Step 4: Simplify right side
    2,803.76x = 6,796,052.78
  5. Step 5: Solve for x
    x = 6,796,052.78/2,803.76
  6. Step 6: Final answer
    x = 2,423.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.