Home / 2,396.87-3,307.76-1,320.09

Finding the Fourth Proportional to 2,396.87, 3,307.76 and 1,320.09

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Solution

The fourth proportional to 2,396.87, 3,307.76 and 1,320.09 is: 1,821.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,396.87 : 3,307.76 = 1,320.09 : x
  2. Step 2: Convert to fraction form
    2,396.87/3,307.76 = 1,320.09/x
  3. Step 3: Cross multiply
    2,396.87x = 3,307.76 × 1,320.09
  4. Step 4: Simplify right side
    2,396.87x = 4,366,534.30
  5. Step 5: Solve for x
    x = 4,366,534.30/2,396.87
  6. Step 6: Final answer
    x = 1,821.77

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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.