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Finding the Fourth Proportional to 2,954.80, 4,430.60 and 1,223.60

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Solution

The fourth proportional to 2,954.80, 4,430.60 and 1,223.60 is: 1,834.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,954.80 : 4,430.60 = 1,223.60 : x
  2. Step 2: Convert to fraction form
    2,954.80/4,430.60 = 1,223.60/x
  3. Step 3: Cross multiply
    2,954.80x = 4,430.60 × 1,223.60
  4. Step 4: Simplify right side
    2,954.80x = 5,421,282.16
  5. Step 5: Solve for x
    x = 5,421,282.16/2,954.80
  6. Step 6: Final answer
    x = 1,834.74

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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.