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Finding the Fourth Proportional to 9,057.81, 12,482.85 and 7,065.21

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Solution

The fourth proportional to 9,057.81, 12,482.85 and 7,065.21 is: 9,736.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,057.81 : 12,482.85 = 7,065.21 : x
  2. Step 2: Convert to fraction form
    9,057.81/12,482.85 = 7,065.21/x
  3. Step 3: Cross multiply
    9,057.81x = 12,482.85 × 7,065.21
  4. Step 4: Simplify right side
    9,057.81x = 88,193,956.65
  5. Step 5: Solve for x
    x = 88,193,956.65/9,057.81
  6. Step 6: Final answer
    x = 9,736.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.