Home / 2,685.44-3,704.95-1,690.78

Finding the Fourth Proportional to 2,685.44, 3,704.95 and 1,690.78

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Solution

The fourth proportional to 2,685.44, 3,704.95 and 1,690.78 is: 2,332.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685.44 : 3,704.95 = 1,690.78 : x
  2. Step 2: Convert to fraction form
    2,685.44/3,704.95 = 1,690.78/x
  3. Step 3: Cross multiply
    2,685.44x = 3,704.95 × 1,690.78
  4. Step 4: Simplify right side
    2,685.44x = 6,264,255.36
  5. Step 5: Solve for x
    x = 6,264,255.36/2,685.44
  6. Step 6: Final answer
    x = 2,332.67

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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.