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Finding the Fourth Proportional to 9,048.20, 12,483 and 5,270.72

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Solution

The fourth proportional to 9,048.20, 12,483 and 5,270.72 is: 7,271.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,048.20 : 12,483 = 5,270.72 : x
  2. Step 2: Convert to fraction form
    9,048.20/12,483 = 5,270.72/x
  3. Step 3: Cross multiply
    9,048.20x = 12,483 × 5,270.72
  4. Step 4: Simplify right side
    9,048.20x = 65,794,397.76
  5. Step 5: Solve for x
    x = 65,794,397.76/9,048.20
  6. Step 6: Final answer
    x = 7,271.55

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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.