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Finding the Fourth Proportional to 2,146.94, 3,220.95 and 848.51

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Solution

The fourth proportional to 2,146.94, 3,220.95 and 848.51 is: 1,272.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,146.94 : 3,220.95 = 848.51 : x
  2. Step 2: Convert to fraction form
    2,146.94/3,220.95 = 848.51/x
  3. Step 3: Cross multiply
    2,146.94x = 3,220.95 × 848.51
  4. Step 4: Simplify right side
    2,146.94x = 2,732,992.18
  5. Step 5: Solve for x
    x = 2,732,992.18/2,146.94
  6. Step 6: Final answer
    x = 1,272.97

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1.5x scale

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.