Home / 2,956.75-4,079.60-1,680.35

Finding the Fourth Proportional to 2,956.75, 4,079.60 and 1,680.35

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Solution

The fourth proportional to 2,956.75, 4,079.60 and 1,680.35 is: 2,318.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,956.75 : 4,079.60 = 1,680.35 : x
  2. Step 2: Convert to fraction form
    2,956.75/4,079.60 = 1,680.35/x
  3. Step 3: Cross multiply
    2,956.75x = 4,079.60 × 1,680.35
  4. Step 4: Simplify right side
    2,956.75x = 6,855,135.46
  5. Step 5: Solve for x
    x = 6,855,135.46/2,956.75
  6. Step 6: Final answer
    x = 2,318.47

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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.