Home / 4,878.48-7,319.40-4,191.60

Finding the Fourth Proportional to 4,878.48, 7,319.40 and 4,191.60

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Solution

The fourth proportional to 4,878.48, 7,319.40 and 4,191.60 is: 6,288.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.48 : 7,319.40 = 4,191.60 : x
  2. Step 2: Convert to fraction form
    4,878.48/7,319.40 = 4,191.60/x
  3. Step 3: Cross multiply
    4,878.48x = 7,319.40 × 4,191.60
  4. Step 4: Simplify right side
    4,878.48x = 30,679,997.04
  5. Step 5: Solve for x
    x = 30,679,997.04/4,878.48
  6. Step 6: Final answer
    x = 6,288.84

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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.