Home / 1,914.98-2,642.22-1,129.07

Finding the Fourth Proportional to 1,914.98, 2,642.22 and 1,129.07

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Solution

The fourth proportional to 1,914.98, 2,642.22 and 1,129.07 is: 1,557.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,914.98 : 2,642.22 = 1,129.07 : x
  2. Step 2: Convert to fraction form
    1,914.98/2,642.22 = 1,129.07/x
  3. Step 3: Cross multiply
    1,914.98x = 2,642.22 × 1,129.07
  4. Step 4: Simplify right side
    1,914.98x = 2,983,257.94
  5. Step 5: Solve for x
    x = 2,983,257.94/1,914.98
  6. Step 6: Final answer
    x = 1,557.86

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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.