Home / 1,551.86-2,139.92-1,174.64

Finding the Fourth Proportional to 1,551.86, 2,139.92 and 1,174.64

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Solution

The fourth proportional to 1,551.86, 2,139.92 and 1,174.64 is: 1,619.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,551.86 : 2,139.92 = 1,174.64 : x
  2. Step 2: Convert to fraction form
    1,551.86/2,139.92 = 1,174.64/x
  3. Step 3: Cross multiply
    1,551.86x = 2,139.92 × 1,174.64
  4. Step 4: Simplify right side
    1,551.86x = 2,513,635.63
  5. Step 5: Solve for x
    x = 2,513,635.63/1,551.86
  6. Step 6: Final answer
    x = 1,619.76

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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.