Home / 4,987.45-6,885.55-3,311.12

Finding the Fourth Proportional to 4,987.45, 6,885.55 and 3,311.12

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Solution

The fourth proportional to 4,987.45, 6,885.55 and 3,311.12 is: 4,571.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,987.45 : 6,885.55 = 3,311.12 : x
  2. Step 2: Convert to fraction form
    4,987.45/6,885.55 = 3,311.12/x
  3. Step 3: Cross multiply
    4,987.45x = 6,885.55 × 3,311.12
  4. Step 4: Simplify right side
    4,987.45x = 22,798,865.76
  5. Step 5: Solve for x
    x = 22,798,865.76/4,987.45
  6. Step 6: Final answer
    x = 4,571.25

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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.