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Finding the Fourth Proportional to 9,055.44, 12,477.78 and 7,279.92

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Solution

The fourth proportional to 9,055.44, 12,477.78 and 7,279.92 is: 10,031.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,055.44 : 12,477.78 = 7,279.92 : x
  2. Step 2: Convert to fraction form
    9,055.44/12,477.78 = 7,279.92/x
  3. Step 3: Cross multiply
    9,055.44x = 12,477.78 × 7,279.92
  4. Step 4: Simplify right side
    9,055.44x = 90,837,240.18
  5. Step 5: Solve for x
    x = 90,837,240.18/9,055.44
  6. Step 6: Final answer
    x = 10,031.23

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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.