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Finding the Fourth Proportional to 2,557.70, 3,528.70 and 1,674.02

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Solution

The fourth proportional to 2,557.70, 3,528.70 and 1,674.02 is: 2,309.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,557.70 : 3,528.70 = 1,674.02 : x
  2. Step 2: Convert to fraction form
    2,557.70/3,528.70 = 1,674.02/x
  3. Step 3: Cross multiply
    2,557.70x = 3,528.70 × 1,674.02
  4. Step 4: Simplify right side
    2,557.70x = 5,907,114.37
  5. Step 5: Solve for x
    x = 5,907,114.37/2,557.70
  6. Step 6: Final answer
    x = 2,309.54

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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.