Home / 12,640.22-18,960.38-3,875.10

Finding the Fourth Proportional to 12,640.22, 18,960.38 and 3,875.10

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Solution

The fourth proportional to 12,640.22, 18,960.38 and 3,875.10 is: 5,812.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,640.22 : 18,960.38 = 3,875.10 : x
  2. Step 2: Convert to fraction form
    12,640.22/18,960.38 = 3,875.10/x
  3. Step 3: Cross multiply
    12,640.22x = 18,960.38 × 3,875.10
  4. Step 4: Simplify right side
    12,640.22x = 73,473,368.54
  5. Step 5: Solve for x
    x = 73,473,368.54/12,640.22
  6. Step 6: Final answer
    x = 5,812.67

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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.