Home / 1,317.13-1,976.06-700.74

Finding the Fourth Proportional to 1,317.13, 1,976.06 and 700.74

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Solution

The fourth proportional to 1,317.13, 1,976.06 and 700.74 is: 1,051.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.13 : 1,976.06 = 700.74 : x
  2. Step 2: Convert to fraction form
    1,317.13/1,976.06 = 700.74/x
  3. Step 3: Cross multiply
    1,317.13x = 1,976.06 × 700.74
  4. Step 4: Simplify right side
    1,317.13x = 1,384,706.04
  5. Step 5: Solve for x
    x = 1,384,706.04/1,317.13
  6. Step 6: Final answer
    x = 1,051.31

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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.