Home / 1,919.48-2,645.26-1,681.88

Finding the Fourth Proportional to 1,919.48, 2,645.26 and 1,681.88

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Solution

The fourth proportional to 1,919.48, 2,645.26 and 1,681.88 is: 2,317.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.48 : 2,645.26 = 1,681.88 : x
  2. Step 2: Convert to fraction form
    1,919.48/2,645.26 = 1,681.88/x
  3. Step 3: Cross multiply
    1,919.48x = 2,645.26 × 1,681.88
  4. Step 4: Simplify right side
    1,919.48x = 4,448,992.46
  5. Step 5: Solve for x
    x = 4,448,992.46/1,919.48
  6. Step 6: Final answer
    x = 2,317.82

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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.