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Finding the Fourth Proportional to 8,613.88, 11,888.06 and 5,470.07

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Solution

The fourth proportional to 8,613.88, 11,888.06 and 5,470.07 is: 7,549.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,613.88 : 11,888.06 = 5,470.07 : x
  2. Step 2: Convert to fraction form
    8,613.88/11,888.06 = 5,470.07/x
  3. Step 3: Cross multiply
    8,613.88x = 11,888.06 × 5,470.07
  4. Step 4: Simplify right side
    8,613.88x = 65,028,460.92
  5. Step 5: Solve for x
    x = 65,028,460.92/8,613.88
  6. Step 6: Final answer
    x = 7,549.27

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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.