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Finding the Fourth Proportional to 7,323.30, 10,980.90 and 2,390.40

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Solution

The fourth proportional to 7,323.30, 10,980.90 and 2,390.40 is: 3,584.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,323.30 : 10,980.90 = 2,390.40 : x
  2. Step 2: Convert to fraction form
    7,323.30/10,980.90 = 2,390.40/x
  3. Step 3: Cross multiply
    7,323.30x = 10,980.90 × 2,390.40
  4. Step 4: Simplify right side
    7,323.30x = 26,248,743.36
  5. Step 5: Solve for x
    x = 26,248,743.36/7,323.30
  6. Step 6: Final answer
    x = 3,584.28

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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.