Home / 2,390.76-3,299.52-1,396.36

Finding the Fourth Proportional to 2,390.76, 3,299.52 and 1,396.36

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Solution

The fourth proportional to 2,390.76, 3,299.52 and 1,396.36 is: 1,927.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,390.76 : 3,299.52 = 1,396.36 : x
  2. Step 2: Convert to fraction form
    2,390.76/3,299.52 = 1,396.36/x
  3. Step 3: Cross multiply
    2,390.76x = 3,299.52 × 1,396.36
  4. Step 4: Simplify right side
    2,390.76x = 4,607,317.75
  5. Step 5: Solve for x
    x = 4,607,317.75/2,390.76
  6. Step 6: Final answer
    x = 1,927.14

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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.