Home / 4,485.78-6,720.03-2,178.90

Finding the Fourth Proportional to 4,485.78, 6,720.03 and 2,178.90

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Solution

The fourth proportional to 4,485.78, 6,720.03 and 2,178.90 is: 3,264.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,485.78 : 6,720.03 = 2,178.90 : x
  2. Step 2: Convert to fraction form
    4,485.78/6,720.03 = 2,178.90/x
  3. Step 3: Cross multiply
    4,485.78x = 6,720.03 × 2,178.90
  4. Step 4: Simplify right side
    4,485.78x = 14,642,273.37
  5. Step 5: Solve for x
    x = 14,642,273.37/4,485.78
  6. Step 6: Final answer
    x = 3,264.15

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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.