Home / 1,817.55-2,509.34-1,189.22

Finding the Fourth Proportional to 1,817.55, 2,509.34 and 1,189.22

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Solution

The fourth proportional to 1,817.55, 2,509.34 and 1,189.22 is: 1,641.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,817.55 : 2,509.34 = 1,189.22 : x
  2. Step 2: Convert to fraction form
    1,817.55/2,509.34 = 1,189.22/x
  3. Step 3: Cross multiply
    1,817.55x = 2,509.34 × 1,189.22
  4. Step 4: Simplify right side
    1,817.55x = 2,984,138.82
  5. Step 5: Solve for x
    x = 2,984,138.82/1,817.55
  6. Step 6: Final answer
    x = 1,641.85

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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.