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Finding the Fourth Proportional to 6,319.64, 8,712.98 and 4,326.76

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Solution

The fourth proportional to 6,319.64, 8,712.98 and 4,326.76 is: 5,965.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,319.64 : 8,712.98 = 4,326.76 : x
  2. Step 2: Convert to fraction form
    6,319.64/8,712.98 = 4,326.76/x
  3. Step 3: Cross multiply
    6,319.64x = 8,712.98 × 4,326.76
  4. Step 4: Simplify right side
    6,319.64x = 37,698,973.34
  5. Step 5: Solve for x
    x = 37,698,973.34/6,319.64
  6. Step 6: Final answer
    x = 5,965.37

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Half scale
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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.