Home / 8,762.12-13,143.60-2,188.36

Finding the Fourth Proportional to 8,762.12, 13,143.60 and 2,188.36

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Solution

The fourth proportional to 8,762.12, 13,143.60 and 2,188.36 is: 3,282.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,762.12 : 13,143.60 = 2,188.36 : x
  2. Step 2: Convert to fraction form
    8,762.12/13,143.60 = 2,188.36/x
  3. Step 3: Cross multiply
    8,762.12x = 13,143.60 × 2,188.36
  4. Step 4: Simplify right side
    8,762.12x = 28,762,928.50
  5. Step 5: Solve for x
    x = 28,762,928.50/8,762.12
  6. Step 6: Final answer
    x = 3,282.64

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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.