Home / 1,564.88-2,157.86-1,318.91

Finding the Fourth Proportional to 1,564.88, 2,157.86 and 1,318.91

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Solution

The fourth proportional to 1,564.88, 2,157.86 and 1,318.91 is: 1,818.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,564.88 : 2,157.86 = 1,318.91 : x
  2. Step 2: Convert to fraction form
    1,564.88/2,157.86 = 1,318.91/x
  3. Step 3: Cross multiply
    1,564.88x = 2,157.86 × 1,318.91
  4. Step 4: Simplify right side
    1,564.88x = 2,846,016.54
  5. Step 5: Solve for x
    x = 2,846,016.54/1,564.88
  6. Step 6: Final answer
    x = 1,818.68

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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.