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Finding the Fourth Proportional to 9,910.64, 14,865.96 and 4,720.16

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Solution

The fourth proportional to 9,910.64, 14,865.96 and 4,720.16 is: 7,080.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,910.64 : 14,865.96 = 4,720.16 : x
  2. Step 2: Convert to fraction form
    9,910.64/14,865.96 = 4,720.16/x
  3. Step 3: Cross multiply
    9,910.64x = 14,865.96 × 4,720.16
  4. Step 4: Simplify right side
    9,910.64x = 70,169,709.75
  5. Step 5: Solve for x
    x = 70,169,709.75/9,910.64
  6. Step 6: Final answer
    x = 7,080.24

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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.