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Finding the Fourth Proportional to 9,720.32, 14,580.32 and 2,794.80

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Solution

The fourth proportional to 9,720.32, 14,580.32 and 2,794.80 is: 4,192.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,720.32 : 14,580.32 = 2,794.80 : x
  2. Step 2: Convert to fraction form
    9,720.32/14,580.32 = 2,794.80/x
  3. Step 3: Cross multiply
    9,720.32x = 14,580.32 × 2,794.80
  4. Step 4: Simplify right side
    9,720.32x = 40,749,078.34
  5. Step 5: Solve for x
    x = 40,749,078.34/9,720.32
  6. Step 6: Final answer
    x = 4,192.15

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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.