Home / 3,000.45-4,140.72-1,674.30

Finding the Fourth Proportional to 3,000.45, 4,140.72 and 1,674.30

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Solution

The fourth proportional to 3,000.45, 4,140.72 and 1,674.30 is: 2,310.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,000.45 : 4,140.72 = 1,674.30 : x
  2. Step 2: Convert to fraction form
    3,000.45/4,140.72 = 1,674.30/x
  3. Step 3: Cross multiply
    3,000.45x = 4,140.72 × 1,674.30
  4. Step 4: Simplify right side
    3,000.45x = 6,932,807.50
  5. Step 5: Solve for x
    x = 6,932,807.50/3,000.45
  6. Step 6: Final answer
    x = 2,310.59

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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.