Home / 2,890.51-3,987.93-1,695.22

Finding the Fourth Proportional to 2,890.51, 3,987.93 and 1,695.22

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Solution

The fourth proportional to 2,890.51, 3,987.93 and 1,695.22 is: 2,338.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.51 : 3,987.93 = 1,695.22 : x
  2. Step 2: Convert to fraction form
    2,890.51/3,987.93 = 1,695.22/x
  3. Step 3: Cross multiply
    2,890.51x = 3,987.93 × 1,695.22
  4. Step 4: Simplify right side
    2,890.51x = 6,760,418.69
  5. Step 5: Solve for x
    x = 6,760,418.69/2,890.51
  6. Step 6: Final answer
    x = 2,338.83

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1.5x scale

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.