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Finding the Fourth Proportional to 2,984.75, 4,118.99 and 1,805.82

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Solution

The fourth proportional to 2,984.75, 4,118.99 and 1,805.82 is: 2,492.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,984.75 : 4,118.99 = 1,805.82 : x
  2. Step 2: Convert to fraction form
    2,984.75/4,118.99 = 1,805.82/x
  3. Step 3: Cross multiply
    2,984.75x = 4,118.99 × 1,805.82
  4. Step 4: Simplify right side
    2,984.75x = 7,438,136.82
  5. Step 5: Solve for x
    x = 7,438,136.82/2,984.75
  6. Step 6: Final answer
    x = 2,492.05

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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.