Home / 3,178.10-4,766.40-1,328.22

Finding the Fourth Proportional to 3,178.10, 4,766.40 and 1,328.22

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Solution

The fourth proportional to 3,178.10, 4,766.40 and 1,328.22 is: 1,992.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.10 : 4,766.40 = 1,328.22 : x
  2. Step 2: Convert to fraction form
    3,178.10/4,766.40 = 1,328.22/x
  3. Step 3: Cross multiply
    3,178.10x = 4,766.40 × 1,328.22
  4. Step 4: Simplify right side
    3,178.10x = 6,330,827.81
  5. Step 5: Solve for x
    x = 6,330,827.81/3,178.10
  6. Step 6: Final answer
    x = 1,992.01

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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.