Home / 8,722.92-12,037.44-5,138.25

Finding the Fourth Proportional to 8,722.92, 12,037.44 and 5,138.25

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Solution

The fourth proportional to 8,722.92, 12,037.44 and 5,138.25 is: 7,090.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,722.92 : 12,037.44 = 5,138.25 : x
  2. Step 2: Convert to fraction form
    8,722.92/12,037.44 = 5,138.25/x
  3. Step 3: Cross multiply
    8,722.92x = 12,037.44 × 5,138.25
  4. Step 4: Simplify right side
    8,722.92x = 61,851,376.08
  5. Step 5: Solve for x
    x = 61,851,376.08/8,722.92
  6. Step 6: Final answer
    x = 7,090.67

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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.