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Finding the Fourth Proportional to 8,968.81, 13,453.28 and 3,125.41

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Solution

The fourth proportional to 8,968.81, 13,453.28 and 3,125.41 is: 4,688.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,968.81 : 13,453.28 = 3,125.41 : x
  2. Step 2: Convert to fraction form
    8,968.81/13,453.28 = 3,125.41/x
  3. Step 3: Cross multiply
    8,968.81x = 13,453.28 × 3,125.41
  4. Step 4: Simplify right side
    8,968.81x = 42,047,015.84
  5. Step 5: Solve for x
    x = 42,047,015.84/8,968.81
  6. Step 6: Final answer
    x = 4,688.14

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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.