Home / 7,079.60-9,770.40-4,247.09

Finding the Fourth Proportional to 7,079.60, 9,770.40 and 4,247.09

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Solution

The fourth proportional to 7,079.60, 9,770.40 and 4,247.09 is: 5,861.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,079.60 : 9,770.40 = 4,247.09 : x
  2. Step 2: Convert to fraction form
    7,079.60/9,770.40 = 4,247.09/x
  3. Step 3: Cross multiply
    7,079.60x = 9,770.40 × 4,247.09
  4. Step 4: Simplify right side
    7,079.60x = 41,495,768.14
  5. Step 5: Solve for x
    x = 41,495,768.14/7,079.60
  6. Step 6: Final answer
    x = 5,861.32

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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.