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Finding the Fourth Proportional to 2,803.59, 3,868.08 and 1,684.78

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Solution

The fourth proportional to 2,803.59, 3,868.08 and 1,684.78 is: 2,324.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,803.59 : 3,868.08 = 1,684.78 : x
  2. Step 2: Convert to fraction form
    2,803.59/3,868.08 = 1,684.78/x
  3. Step 3: Cross multiply
    2,803.59x = 3,868.08 × 1,684.78
  4. Step 4: Simplify right side
    2,803.59x = 6,516,836.06
  5. Step 5: Solve for x
    x = 6,516,836.06/2,803.59
  6. Step 6: Final answer
    x = 2,324.46

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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.