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Finding the Fourth Proportional to 9,040.80, 12,674.40 and 9,040.80

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Solution

The fourth proportional to 9,040.80, 12,674.40 and 9,040.80 is: 12,674.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,040.80 : 12,674.40 = 9,040.80 : x
  2. Step 2: Convert to fraction form
    9,040.80/12,674.40 = 9,040.80/x
  3. Step 3: Cross multiply
    9,040.80x = 12,674.40 × 9,040.80
  4. Step 4: Simplify right side
    9,040.80x = 114,586,715.52
  5. Step 5: Solve for x
    x = 114,586,715.52/9,040.80
  6. Step 6: Final answer
    x = 12,674.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.