Home / 2,175.88-3,001.62-1,555.24

Finding the Fourth Proportional to 2,175.88, 3,001.62 and 1,555.24

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Solution

The fourth proportional to 2,175.88, 3,001.62 and 1,555.24 is: 2,145.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,175.88 : 3,001.62 = 1,555.24 : x
  2. Step 2: Convert to fraction form
    2,175.88/3,001.62 = 1,555.24/x
  3. Step 3: Cross multiply
    2,175.88x = 3,001.62 × 1,555.24
  4. Step 4: Simplify right side
    2,175.88x = 4,668,239.49
  5. Step 5: Solve for x
    x = 4,668,239.49/2,175.88
  6. Step 6: Final answer
    x = 2,145.45

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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.