Home / 2,455.81-3,390.12-1,616.95

Finding the Fourth Proportional to 2,455.81, 3,390.12 and 1,616.95

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Solution

The fourth proportional to 2,455.81, 3,390.12 and 1,616.95 is: 2,232.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,455.81 : 3,390.12 = 1,616.95 : x
  2. Step 2: Convert to fraction form
    2,455.81/3,390.12 = 1,616.95/x
  3. Step 3: Cross multiply
    2,455.81x = 3,390.12 × 1,616.95
  4. Step 4: Simplify right side
    2,455.81x = 5,481,658.77
  5. Step 5: Solve for x
    x = 5,481,658.77/2,455.81
  6. Step 6: Final answer
    x = 2,232.12

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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.