Home / 1,211.04-1,817.10-1,207.80

Finding the Fourth Proportional to 1,211.04, 1,817.10 and 1,207.80

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Solution

The fourth proportional to 1,211.04, 1,817.10 and 1,207.80 is: 1,812.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211.04 : 1,817.10 = 1,207.80 : x
  2. Step 2: Convert to fraction form
    1,211.04/1,817.10 = 1,207.80/x
  3. Step 3: Cross multiply
    1,211.04x = 1,817.10 × 1,207.80
  4. Step 4: Simplify right side
    1,211.04x = 2,194,693.38
  5. Step 5: Solve for x
    x = 2,194,693.38/1,211.04
  6. Step 6: Final answer
    x = 1,812.24

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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.