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Finding the Fourth Proportional to 7,430.80, 11,147.80 and 2,237.20

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Solution

The fourth proportional to 7,430.80, 11,147.80 and 2,237.20 is: 3,356.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,430.80 : 11,147.80 = 2,237.20 : x
  2. Step 2: Convert to fraction form
    7,430.80/11,147.80 = 2,237.20/x
  3. Step 3: Cross multiply
    7,430.80x = 11,147.80 × 2,237.20
  4. Step 4: Simplify right side
    7,430.80x = 24,939,858.16
  5. Step 5: Solve for x
    x = 24,939,858.16/7,430.80
  6. Step 6: Final answer
    x = 3,356.28

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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.