Home / 1,909.23-2,634.68-1,123.32

Finding the Fourth Proportional to 1,909.23, 2,634.68 and 1,123.32

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Solution

The fourth proportional to 1,909.23, 2,634.68 and 1,123.32 is: 1,550.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909.23 : 2,634.68 = 1,123.32 : x
  2. Step 2: Convert to fraction form
    1,909.23/2,634.68 = 1,123.32/x
  3. Step 3: Cross multiply
    1,909.23x = 2,634.68 × 1,123.32
  4. Step 4: Simplify right side
    1,909.23x = 2,959,588.74
  5. Step 5: Solve for x
    x = 2,959,588.74/1,909.23
  6. Step 6: Final answer
    x = 1,550.15

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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.