Home / 4,328.81-6,488.09-1,986.84

Finding the Fourth Proportional to 4,328.81, 6,488.09 and 1,986.84

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Solution

The fourth proportional to 4,328.81, 6,488.09 and 1,986.84 is: 2,977.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,328.81 : 6,488.09 = 1,986.84 : x
  2. Step 2: Convert to fraction form
    4,328.81/6,488.09 = 1,986.84/x
  3. Step 3: Cross multiply
    4,328.81x = 6,488.09 × 1,986.84
  4. Step 4: Simplify right side
    4,328.81x = 12,890,786.80
  5. Step 5: Solve for x
    x = 12,890,786.80/4,328.81
  6. Step 6: Final answer
    x = 2,977.91

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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.