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Finding the Fourth Proportional to 8,875.78, 13,309.78 and 3,325.23

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Solution

The fourth proportional to 8,875.78, 13,309.78 and 3,325.23 is: 4,986.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,875.78 : 13,309.78 = 3,325.23 : x
  2. Step 2: Convert to fraction form
    8,875.78/13,309.78 = 3,325.23/x
  3. Step 3: Cross multiply
    8,875.78x = 13,309.78 × 3,325.23
  4. Step 4: Simplify right side
    8,875.78x = 44,258,079.75
  5. Step 5: Solve for x
    x = 44,258,079.75/8,875.78
  6. Step 6: Final answer
    x = 4,986.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.