Home / 6,720.40-10,068.45-4,120.30

Finding the Fourth Proportional to 6,720.40, 10,068.45 and 4,120.30

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Solution

The fourth proportional to 6,720.40, 10,068.45 and 4,120.30 is: 6,173.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,720.40 : 10,068.45 = 4,120.30 : x
  2. Step 2: Convert to fraction form
    6,720.40/10,068.45 = 4,120.30/x
  3. Step 3: Cross multiply
    6,720.40x = 10,068.45 × 4,120.30
  4. Step 4: Simplify right side
    6,720.40x = 41,485,034.54
  5. Step 5: Solve for x
    x = 41,485,034.54/6,720.40
  6. Step 6: Final answer
    x = 6,173.00

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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.