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Finding the Fourth Proportional to 5,685.83, 7,845.93 and 3,328.15

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Solution

The fourth proportional to 5,685.83, 7,845.93 and 3,328.15 is: 4,592.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,685.83 : 7,845.93 = 3,328.15 : x
  2. Step 2: Convert to fraction form
    5,685.83/7,845.93 = 3,328.15/x
  3. Step 3: Cross multiply
    5,685.83x = 7,845.93 × 3,328.15
  4. Step 4: Simplify right side
    5,685.83x = 26,112,415.29
  5. Step 5: Solve for x
    x = 26,112,415.29/5,685.83
  6. Step 6: Final answer
    x = 4,592.54

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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.