Home / 1,909.18-2,634.75-1,123.06

Finding the Fourth Proportional to 1,909.18, 2,634.75 and 1,123.06

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Solution

The fourth proportional to 1,909.18, 2,634.75 and 1,123.06 is: 1,549.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909.18 : 2,634.75 = 1,123.06 : x
  2. Step 2: Convert to fraction form
    1,909.18/2,634.75 = 1,123.06/x
  3. Step 3: Cross multiply
    1,909.18x = 2,634.75 × 1,123.06
  4. Step 4: Simplify right side
    1,909.18x = 2,958,982.34
  5. Step 5: Solve for x
    x = 2,958,982.34/1,909.18
  6. Step 6: Final answer
    x = 1,549.87

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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.