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Finding the Fourth Proportional to 8,903.93, 12,289.73 and 5,719.41

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Solution

The fourth proportional to 8,903.93, 12,289.73 and 5,719.41 is: 7,894.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,903.93 : 12,289.73 = 5,719.41 : x
  2. Step 2: Convert to fraction form
    8,903.93/12,289.73 = 5,719.41/x
  3. Step 3: Cross multiply
    8,903.93x = 12,289.73 × 5,719.41
  4. Step 4: Simplify right side
    8,903.93x = 70,289,976.06
  5. Step 5: Solve for x
    x = 70,289,976.06/8,903.93
  6. Step 6: Final answer
    x = 7,894.27

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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.