Home / 1,317.74-1,972.35-1,054.69

Finding the Fourth Proportional to 1,317.74, 1,972.35 and 1,054.69

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Solution

The fourth proportional to 1,317.74, 1,972.35 and 1,054.69 is: 1,578.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.74 : 1,972.35 = 1,054.69 : x
  2. Step 2: Convert to fraction form
    1,317.74/1,972.35 = 1,054.69/x
  3. Step 3: Cross multiply
    1,317.74x = 1,972.35 × 1,054.69
  4. Step 4: Simplify right side
    1,317.74x = 2,080,212.89
  5. Step 5: Solve for x
    x = 2,080,212.89/1,317.74
  6. Step 6: Final answer
    x = 1,578.63

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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.