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Finding the Fourth Proportional to 8,904.96, 12,289.32 and 5,368.68

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Solution

The fourth proportional to 8,904.96, 12,289.32 and 5,368.68 is: 7,409.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,904.96 : 12,289.32 = 5,368.68 : x
  2. Step 2: Convert to fraction form
    8,904.96/12,289.32 = 5,368.68/x
  3. Step 3: Cross multiply
    8,904.96x = 12,289.32 × 5,368.68
  4. Step 4: Simplify right side
    8,904.96x = 65,977,426.50
  5. Step 5: Solve for x
    x = 65,977,426.50/8,904.96
  6. Step 6: Final answer
    x = 7,409.06

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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.