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Finding the Fourth Proportional to 6,279.32, 8,656.22 and 4,784.65

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Solution

The fourth proportional to 6,279.32, 8,656.22 and 4,784.65 is: 6,595.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,279.32 : 8,656.22 = 4,784.65 : x
  2. Step 2: Convert to fraction form
    6,279.32/8,656.22 = 4,784.65/x
  3. Step 3: Cross multiply
    6,279.32x = 8,656.22 × 4,784.65
  4. Step 4: Simplify right side
    6,279.32x = 41,416,959.10
  5. Step 5: Solve for x
    x = 41,416,959.10/6,279.32
  6. Step 6: Final answer
    x = 6,595.77

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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.