Home / 8,745.63-13,118.34-2,505.78

Finding the Fourth Proportional to 8,745.63, 13,118.34 and 2,505.78

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Solution

The fourth proportional to 8,745.63, 13,118.34 and 2,505.78 is: 3,758.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,745.63 : 13,118.34 = 2,505.78 : x
  2. Step 2: Convert to fraction form
    8,745.63/13,118.34 = 2,505.78/x
  3. Step 3: Cross multiply
    8,745.63x = 13,118.34 × 2,505.78
  4. Step 4: Simplify right side
    8,745.63x = 32,871,674.01
  5. Step 5: Solve for x
    x = 32,871,674.01/8,745.63
  6. Step 6: Final answer
    x = 3,758.64

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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.