Home / 7,005.38-10,479.35-6,389.60

Finding the Fourth Proportional to 7,005.38, 10,479.35 and 6,389.60

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Solution

The fourth proportional to 7,005.38, 10,479.35 and 6,389.60 is: 9,558.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,005.38 : 10,479.35 = 6,389.60 : x
  2. Step 2: Convert to fraction form
    7,005.38/10,479.35 = 6,389.60/x
  3. Step 3: Cross multiply
    7,005.38x = 10,479.35 × 6,389.60
  4. Step 4: Simplify right side
    7,005.38x = 66,958,770.42
  5. Step 5: Solve for x
    x = 66,958,770.42/7,005.38
  6. Step 6: Final answer
    x = 9,558.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.