Home / 2,975.08-4,105.12-1,779.68

Finding the Fourth Proportional to 2,975.08, 4,105.12 and 1,779.68

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Solution

The fourth proportional to 2,975.08, 4,105.12 and 1,779.68 is: 2,455.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,975.08 : 4,105.12 = 1,779.68 : x
  2. Step 2: Convert to fraction form
    2,975.08/4,105.12 = 1,779.68/x
  3. Step 3: Cross multiply
    2,975.08x = 4,105.12 × 1,779.68
  4. Step 4: Simplify right side
    2,975.08x = 7,305,799.96
  5. Step 5: Solve for x
    x = 7,305,799.96/2,975.08
  6. Step 6: Final answer
    x = 2,455.67

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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.