Home / 3,178.98-4,770.90-1,230.12

Finding the Fourth Proportional to 3,178.98, 4,770.90 and 1,230.12

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Solution

The fourth proportional to 3,178.98, 4,770.90 and 1,230.12 is: 1,846.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.98 : 4,770.90 = 1,230.12 : x
  2. Step 2: Convert to fraction form
    3,178.98/4,770.90 = 1,230.12/x
  3. Step 3: Cross multiply
    3,178.98x = 4,770.90 × 1,230.12
  4. Step 4: Simplify right side
    3,178.98x = 5,868,779.51
  5. Step 5: Solve for x
    x = 5,868,779.51/3,178.98
  6. Step 6: Final answer
    x = 1,846.12

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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.