Home / 1,914.59-2,642.68-1,129.09

Finding the Fourth Proportional to 1,914.59, 2,642.68 and 1,129.09

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Solution

The fourth proportional to 1,914.59, 2,642.68 and 1,129.09 is: 1,558.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,914.59 : 2,642.68 = 1,129.09 : x
  2. Step 2: Convert to fraction form
    1,914.59/2,642.68 = 1,129.09/x
  3. Step 3: Cross multiply
    1,914.59x = 2,642.68 × 1,129.09
  4. Step 4: Simplify right side
    1,914.59x = 2,983,823.56
  5. Step 5: Solve for x
    x = 2,983,823.56/1,914.59
  6. Step 6: Final answer
    x = 1,558.47

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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.