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Finding the Fourth Proportional to 2,458.86, 3,391.80 and 1,574.34

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Solution

The fourth proportional to 2,458.86, 3,391.80 and 1,574.34 is: 2,171.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,458.86 : 3,391.80 = 1,574.34 : x
  2. Step 2: Convert to fraction form
    2,458.86/3,391.80 = 1,574.34/x
  3. Step 3: Cross multiply
    2,458.86x = 3,391.80 × 1,574.34
  4. Step 4: Simplify right side
    2,458.86x = 5,339,846.41
  5. Step 5: Solve for x
    x = 5,339,846.41/2,458.86
  6. Step 6: Final answer
    x = 2,171.68

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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.