Home / 6,319.32-8,720.64-3,668.28

Finding the Fourth Proportional to 6,319.32, 8,720.64 and 3,668.28

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Solution

The fourth proportional to 6,319.32, 8,720.64 and 3,668.28 is: 5,062.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,319.32 : 8,720.64 = 3,668.28 : x
  2. Step 2: Convert to fraction form
    6,319.32/8,720.64 = 3,668.28/x
  3. Step 3: Cross multiply
    6,319.32x = 8,720.64 × 3,668.28
  4. Step 4: Simplify right side
    6,319.32x = 31,989,749.30
  5. Step 5: Solve for x
    x = 31,989,749.30/6,319.32
  6. Step 6: Final answer
    x = 5,062.21

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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.