Home / 4,187.60-6,278.40-2,106.12

Finding the Fourth Proportional to 4,187.60, 6,278.40 and 2,106.12

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Solution

The fourth proportional to 4,187.60, 6,278.40 and 2,106.12 is: 3,157.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,187.60 : 6,278.40 = 2,106.12 : x
  2. Step 2: Convert to fraction form
    4,187.60/6,278.40 = 2,106.12/x
  3. Step 3: Cross multiply
    4,187.60x = 6,278.40 × 2,106.12
  4. Step 4: Simplify right side
    4,187.60x = 13,223,063.81
  5. Step 5: Solve for x
    x = 13,223,063.81/4,187.60
  6. Step 6: Final answer
    x = 3,157.67

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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.