Home / 1,984.46-2,738.55-1,145.15

Finding the Fourth Proportional to 1,984.46, 2,738.55 and 1,145.15

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Solution

The fourth proportional to 1,984.46, 2,738.55 and 1,145.15 is: 1,580.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,984.46 : 2,738.55 = 1,145.15 : x
  2. Step 2: Convert to fraction form
    1,984.46/2,738.55 = 1,145.15/x
  3. Step 3: Cross multiply
    1,984.46x = 2,738.55 × 1,145.15
  4. Step 4: Simplify right side
    1,984.46x = 3,136,050.53
  5. Step 5: Solve for x
    x = 3,136,050.53/1,984.46
  6. Step 6: Final answer
    x = 1,580.30

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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.