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Finding the Fourth Proportional to 8,047.40, 12,055.74 and 4,975.40

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Solution

The fourth proportional to 8,047.40, 12,055.74 and 4,975.40 is: 7,453.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,047.40 : 12,055.74 = 4,975.40 : x
  2. Step 2: Convert to fraction form
    8,047.40/12,055.74 = 4,975.40/x
  3. Step 3: Cross multiply
    8,047.40x = 12,055.74 × 4,975.40
  4. Step 4: Simplify right side
    8,047.40x = 59,982,128.80
  5. Step 5: Solve for x
    x = 59,982,128.80/8,047.40
  6. Step 6: Final answer
    x = 7,453.60

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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.