Home / 2,715.35-3,745.91-1,877.21

Finding the Fourth Proportional to 2,715.35, 3,745.91 and 1,877.21

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Solution

The fourth proportional to 2,715.35, 3,745.91 and 1,877.21 is: 2,589.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,715.35 : 3,745.91 = 1,877.21 : x
  2. Step 2: Convert to fraction form
    2,715.35/3,745.91 = 1,877.21/x
  3. Step 3: Cross multiply
    2,715.35x = 3,745.91 × 1,877.21
  4. Step 4: Simplify right side
    2,715.35x = 7,031,859.72
  5. Step 5: Solve for x
    x = 7,031,859.72/2,715.35
  6. Step 6: Final answer
    x = 2,589.67

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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.