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Finding the Fourth Proportional to 1,670.54, 2,303.94 and 1,251.87

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Solution

The fourth proportional to 1,670.54, 2,303.94 and 1,251.87 is: 1,726.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,670.54 : 2,303.94 = 1,251.87 : x
  2. Step 2: Convert to fraction form
    1,670.54/2,303.94 = 1,251.87/x
  3. Step 3: Cross multiply
    1,670.54x = 2,303.94 × 1,251.87
  4. Step 4: Simplify right side
    1,670.54x = 2,884,233.37
  5. Step 5: Solve for x
    x = 2,884,233.37/1,670.54
  6. Step 6: Final answer
    x = 1,726.53

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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.