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Finding the Fourth Proportional to 9,430.60, 14,137.80 and 5,728.90

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Solution

The fourth proportional to 9,430.60, 14,137.80 and 5,728.90 is: 8,588.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,430.60 : 14,137.80 = 5,728.90 : x
  2. Step 2: Convert to fraction form
    9,430.60/14,137.80 = 5,728.90/x
  3. Step 3: Cross multiply
    9,430.60x = 14,137.80 × 5,728.90
  4. Step 4: Simplify right side
    9,430.60x = 80,994,042.42
  5. Step 5: Solve for x
    x = 80,994,042.42/9,430.60
  6. Step 6: Final answer
    x = 8,588.43

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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.