Home / 2,874.12-4,307.70-1,311.99

Finding the Fourth Proportional to 2,874.12, 4,307.70 and 1,311.99

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Solution

The fourth proportional to 2,874.12, 4,307.70 and 1,311.99 is: 1,966.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,874.12 : 4,307.70 = 1,311.99 : x
  2. Step 2: Convert to fraction form
    2,874.12/4,307.70 = 1,311.99/x
  3. Step 3: Cross multiply
    2,874.12x = 4,307.70 × 1,311.99
  4. Step 4: Simplify right side
    2,874.12x = 5,651,659.32
  5. Step 5: Solve for x
    x = 5,651,659.32/2,874.12
  6. Step 6: Final answer
    x = 1,966.40

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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.