Home / 2,455.95-3,389.39-1,393.90

Finding the Fourth Proportional to 2,455.95, 3,389.39 and 1,393.90

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Solution

The fourth proportional to 2,455.95, 3,389.39 and 1,393.90 is: 1,923.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,455.95 : 3,389.39 = 1,393.90 : x
  2. Step 2: Convert to fraction form
    2,455.95/3,389.39 = 1,393.90/x
  3. Step 3: Cross multiply
    2,455.95x = 3,389.39 × 1,393.90
  4. Step 4: Simplify right side
    2,455.95x = 4,724,474.70
  5. Step 5: Solve for x
    x = 4,724,474.70/2,455.95
  6. Step 6: Final answer
    x = 1,923.69

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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.