Home / 1,909.26-2,635.20-1,210.50

Finding the Fourth Proportional to 1,909.26, 2,635.20 and 1,210.50

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Solution

The fourth proportional to 1,909.26, 2,635.20 and 1,210.50 is: 1,670.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909.26 : 2,635.20 = 1,210.50 : x
  2. Step 2: Convert to fraction form
    1,909.26/2,635.20 = 1,210.50/x
  3. Step 3: Cross multiply
    1,909.26x = 2,635.20 × 1,210.50
  4. Step 4: Simplify right side
    1,909.26x = 3,189,909.60
  5. Step 5: Solve for x
    x = 3,189,909.60/1,909.26
  6. Step 6: Final answer
    x = 1,670.76

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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.