Home / 5,877.20-8,118.60-5,704.40

Finding the Fourth Proportional to 5,877.20, 8,118.60 and 5,704.40

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Solution

The fourth proportional to 5,877.20, 8,118.60 and 5,704.40 is: 7,879.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,877.20 : 8,118.60 = 5,704.40 : x
  2. Step 2: Convert to fraction form
    5,877.20/8,118.60 = 5,704.40/x
  3. Step 3: Cross multiply
    5,877.20x = 8,118.60 × 5,704.40
  4. Step 4: Simplify right side
    5,877.20x = 46,311,741.84
  5. Step 5: Solve for x
    x = 46,311,741.84/5,877.20
  6. Step 6: Final answer
    x = 7,879.90

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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.