Home / 3,006.72-4,148.84-1,680.40

Finding the Fourth Proportional to 3,006.72, 4,148.84 and 1,680.40

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Solution

The fourth proportional to 3,006.72, 4,148.84 and 1,680.40 is: 2,318.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,006.72 : 4,148.84 = 1,680.40 : x
  2. Step 2: Convert to fraction form
    3,006.72/4,148.84 = 1,680.40/x
  3. Step 3: Cross multiply
    3,006.72x = 4,148.84 × 1,680.40
  4. Step 4: Simplify right side
    3,006.72x = 6,971,687.33
  5. Step 5: Solve for x
    x = 6,971,687.33/3,006.72
  6. Step 6: Final answer
    x = 2,318.70

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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.