Home / 1,379.18-2,066.65-1,053.56

Finding the Fourth Proportional to 1,379.18, 2,066.65 and 1,053.56

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Solution

The fourth proportional to 1,379.18, 2,066.65 and 1,053.56 is: 1,578.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,379.18 : 2,066.65 = 1,053.56 : x
  2. Step 2: Convert to fraction form
    1,379.18/2,066.65 = 1,053.56/x
  3. Step 3: Cross multiply
    1,379.18x = 2,066.65 × 1,053.56
  4. Step 4: Simplify right side
    1,379.18x = 2,177,342.31
  5. Step 5: Solve for x
    x = 2,177,342.31/1,379.18
  6. Step 6: Final answer
    x = 1,578.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.