Home / 2,311.04-3,466.58-1,287.20

Finding the Fourth Proportional to 2,311.04, 3,466.58 and 1,287.20

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Solution

The fourth proportional to 2,311.04, 3,466.58 and 1,287.20 is: 1,930.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.04 : 3,466.58 = 1,287.20 : x
  2. Step 2: Convert to fraction form
    2,311.04/3,466.58 = 1,287.20/x
  3. Step 3: Cross multiply
    2,311.04x = 3,466.58 × 1,287.20
  4. Step 4: Simplify right side
    2,311.04x = 4,462,181.78
  5. Step 5: Solve for x
    x = 4,462,181.78/2,311.04
  6. Step 6: Final answer
    x = 1,930.81

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1.5x scale

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.