Home / 1,909.24-2,634.85-1,070.21

Finding the Fourth Proportional to 1,909.24, 2,634.85 and 1,070.21

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Solution

The fourth proportional to 1,909.24, 2,634.85 and 1,070.21 is: 1,476.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909.24 : 2,634.85 = 1,070.21 : x
  2. Step 2: Convert to fraction form
    1,909.24/2,634.85 = 1,070.21/x
  3. Step 3: Cross multiply
    1,909.24x = 2,634.85 × 1,070.21
  4. Step 4: Simplify right side
    1,909.24x = 2,819,853.75
  5. Step 5: Solve for x
    x = 2,819,853.75/1,909.24
  6. Step 6: Final answer
    x = 1,476.95

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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.