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Finding the Fourth Proportional to 3,391, 4,677.69 and 2,328.82

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Solution

The fourth proportional to 3,391, 4,677.69 and 2,328.82 is: 3,212.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391 : 4,677.69 = 2,328.82 : x
  2. Step 2: Convert to fraction form
    3,391/4,677.69 = 2,328.82/x
  3. Step 3: Cross multiply
    3,391x = 4,677.69 × 2,328.82
  4. Step 4: Simplify right side
    3,391x = 10,893,498.03
  5. Step 5: Solve for x
    x = 10,893,498.03/3,391
  6. Step 6: Final answer
    x = 3,212.47

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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.