Home / 2,122.18-2,926.86-1,531.69

Finding the Fourth Proportional to 2,122.18, 2,926.86 and 1,531.69

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Solution

The fourth proportional to 2,122.18, 2,926.86 and 1,531.69 is: 2,112.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.18 : 2,926.86 = 1,531.69 : x
  2. Step 2: Convert to fraction form
    2,122.18/2,926.86 = 1,531.69/x
  3. Step 3: Cross multiply
    2,122.18x = 2,926.86 × 1,531.69
  4. Step 4: Simplify right side
    2,122.18x = 4,483,042.19
  5. Step 5: Solve for x
    x = 4,483,042.19/2,122.18
  6. Step 6: Final answer
    x = 2,112.47

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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.