Home / 4,667.85-6,439.37-2,987.91

Finding the Fourth Proportional to 4,667.85, 6,439.37 and 2,987.91

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Solution

The fourth proportional to 4,667.85, 6,439.37 and 2,987.91 is: 4,121.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,667.85 : 6,439.37 = 2,987.91 : x
  2. Step 2: Convert to fraction form
    4,667.85/6,439.37 = 2,987.91/x
  3. Step 3: Cross multiply
    4,667.85x = 6,439.37 × 2,987.91
  4. Step 4: Simplify right side
    4,667.85x = 19,240,243.08
  5. Step 5: Solve for x
    x = 19,240,243.08/4,667.85
  6. Step 6: Final answer
    x = 4,121.86

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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.