Home / 1,764.51-2,645.74-668.17

Finding the Fourth Proportional to 1,764.51, 2,645.74 and 668.17

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Solution

The fourth proportional to 1,764.51, 2,645.74 and 668.17 is: 1,001.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,764.51 : 2,645.74 = 668.17 : x
  2. Step 2: Convert to fraction form
    1,764.51/2,645.74 = 668.17/x
  3. Step 3: Cross multiply
    1,764.51x = 2,645.74 × 668.17
  4. Step 4: Simplify right side
    1,764.51x = 1,767,804.10
  5. Step 5: Solve for x
    x = 1,767,804.10/1,764.51
  6. Step 6: Final answer
    x = 1,001.87

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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.