Home / 3,397.65-4,688.70-1,905.60

Finding the Fourth Proportional to 3,397.65, 4,688.70 and 1,905.60

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Solution

The fourth proportional to 3,397.65, 4,688.70 and 1,905.60 is: 2,629.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,397.65 : 4,688.70 = 1,905.60 : x
  2. Step 2: Convert to fraction form
    3,397.65/4,688.70 = 1,905.60/x
  3. Step 3: Cross multiply
    3,397.65x = 4,688.70 × 1,905.60
  4. Step 4: Simplify right side
    3,397.65x = 8,934,786.72
  5. Step 5: Solve for x
    x = 8,934,786.72/3,397.65
  6. Step 6: Final answer
    x = 2,629.70

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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.