Home / 2,161.91-2,985.98-1,575.06

Finding the Fourth Proportional to 2,161.91, 2,985.98 and 1,575.06

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Solution

The fourth proportional to 2,161.91, 2,985.98 and 1,575.06 is: 2,175.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.91 : 2,985.98 = 1,575.06 : x
  2. Step 2: Convert to fraction form
    2,161.91/2,985.98 = 1,575.06/x
  3. Step 3: Cross multiply
    2,161.91x = 2,985.98 × 1,575.06
  4. Step 4: Simplify right side
    2,161.91x = 4,703,089.78
  5. Step 5: Solve for x
    x = 4,703,089.78/2,161.91
  6. Step 6: Final answer
    x = 2,175.44

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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.