Home / 1,909.00-2,858.63-1,216.45

Finding the Fourth Proportional to 1,909.00, 2,858.63 and 1,216.45

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Solution

The fourth proportional to 1,909.00, 2,858.63 and 1,216.45 is: 1,821.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909.00 : 2,858.63 = 1,216.45 : x
  2. Step 2: Convert to fraction form
    1,909.00/2,858.63 = 1,216.45/x
  3. Step 3: Cross multiply
    1,909.00x = 2,858.63 × 1,216.45
  4. Step 4: Simplify right side
    1,909.00x = 3,477,366.17
  5. Step 5: Solve for x
    x = 3,477,366.17/1,909.00
  6. Step 6: Final answer
    x = 1,821.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.