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Finding the Fourth Proportional to 3,640.69, 5,461.03 and 904.69

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Solution

The fourth proportional to 3,640.69, 5,461.03 and 904.69 is: 1,357.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,640.69 : 5,461.03 = 904.69 : x
  2. Step 2: Convert to fraction form
    3,640.69/5,461.03 = 904.69/x
  3. Step 3: Cross multiply
    3,640.69x = 5,461.03 × 904.69
  4. Step 4: Simplify right side
    3,640.69x = 4,940,539.23
  5. Step 5: Solve for x
    x = 4,940,539.23/3,640.69
  6. Step 6: Final answer
    x = 1,357.03

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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.