Home / 2,749.08-4,124.70-1,209

Finding the Fourth Proportional to 2,749.08, 4,124.70 and 1,209

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Solution

The fourth proportional to 2,749.08, 4,124.70 and 1,209 is: 1,813.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,749.08 : 4,124.70 = 1,209 : x
  2. Step 2: Convert to fraction form
    2,749.08/4,124.70 = 1,209/x
  3. Step 3: Cross multiply
    2,749.08x = 4,124.70 × 1,209
  4. Step 4: Simplify right side
    2,749.08x = 4,986,762.30
  5. Step 5: Solve for x
    x = 4,986,762.30/2,749.08
  6. Step 6: Final answer
    x = 1,813.97

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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.