Home / 6,819.20-9,405.80-6,590.64

Finding the Fourth Proportional to 6,819.20, 9,405.80 and 6,590.64

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Solution

The fourth proportional to 6,819.20, 9,405.80 and 6,590.64 is: 9,090.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,819.20 : 9,405.80 = 6,590.64 : x
  2. Step 2: Convert to fraction form
    6,819.20/9,405.80 = 6,590.64/x
  3. Step 3: Cross multiply
    6,819.20x = 9,405.80 × 6,590.64
  4. Step 4: Simplify right side
    6,819.20x = 61,990,241.71
  5. Step 5: Solve for x
    x = 61,990,241.71/6,819.20
  6. Step 6: Final answer
    x = 9,090.54

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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.