Home / 2,126.88-2,934.90-1,230.39

Finding the Fourth Proportional to 2,126.88, 2,934.90 and 1,230.39

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Solution

The fourth proportional to 2,126.88, 2,934.90 and 1,230.39 is: 1,697.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.88 : 2,934.90 = 1,230.39 : x
  2. Step 2: Convert to fraction form
    2,126.88/2,934.90 = 1,230.39/x
  3. Step 3: Cross multiply
    2,126.88x = 2,934.90 × 1,230.39
  4. Step 4: Simplify right side
    2,126.88x = 3,611,071.61
  5. Step 5: Solve for x
    x = 3,611,071.61/2,126.88
  6. Step 6: Final answer
    x = 1,697.83

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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.