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Finding the Fourth Proportional to 9,411.09, 12,888.44 and 9,288.08

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Solution

The fourth proportional to 9,411.09, 12,888.44 and 9,288.08 is: 12,719.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,411.09 : 12,888.44 = 9,288.08 : x
  2. Step 2: Convert to fraction form
    9,411.09/12,888.44 = 9,288.08/x
  3. Step 3: Cross multiply
    9,411.09x = 12,888.44 × 9,288.08
  4. Step 4: Simplify right side
    9,411.09x = 119,708,829.57
  5. Step 5: Solve for x
    x = 119,708,829.57/9,411.09
  6. Step 6: Final answer
    x = 12,719.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.