Home / 5,390.40-8,085.60-4,677.60

Finding the Fourth Proportional to 5,390.40, 8,085.60 and 4,677.60

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Solution

The fourth proportional to 5,390.40, 8,085.60 and 4,677.60 is: 7,016.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.40 : 8,085.60 = 4,677.60 : x
  2. Step 2: Convert to fraction form
    5,390.40/8,085.60 = 4,677.60/x
  3. Step 3: Cross multiply
    5,390.40x = 8,085.60 × 4,677.60
  4. Step 4: Simplify right side
    5,390.40x = 37,821,202.56
  5. Step 5: Solve for x
    x = 37,821,202.56/5,390.40
  6. Step 6: Final answer
    x = 7,016.40

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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.