Home / 6,318.90-8,720.08-3,666.50

Finding the Fourth Proportional to 6,318.90, 8,720.08 and 3,666.50

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Solution

The fourth proportional to 6,318.90, 8,720.08 and 3,666.50 is: 5,059.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,318.90 : 8,720.08 = 3,666.50 : x
  2. Step 2: Convert to fraction form
    6,318.90/8,720.08 = 3,666.50/x
  3. Step 3: Cross multiply
    6,318.90x = 8,720.08 × 3,666.50
  4. Step 4: Simplify right side
    6,318.90x = 31,972,173.32
  5. Step 5: Solve for x
    x = 31,972,173.32/6,318.90
  6. Step 6: Final answer
    x = 5,059.77

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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.