Home / 9,120.12-13,671.12-4,736.40

Finding the Fourth Proportional to 9,120.12, 13,671.12 and 4,736.40

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Solution

The fourth proportional to 9,120.12, 13,671.12 and 4,736.40 is: 7,099.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.12 : 13,671.12 = 4,736.40 : x
  2. Step 2: Convert to fraction form
    9,120.12/13,671.12 = 4,736.40/x
  3. Step 3: Cross multiply
    9,120.12x = 13,671.12 × 4,736.40
  4. Step 4: Simplify right side
    9,120.12x = 64,751,892.77
  5. Step 5: Solve for x
    x = 64,751,892.77/9,120.12
  6. Step 6: Final answer
    x = 7,099.89

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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.