Home / 3,136.10-4,704.80-1,287.18

Finding the Fourth Proportional to 3,136.10, 4,704.80 and 1,287.18

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Solution

The fourth proportional to 3,136.10, 4,704.80 and 1,287.18 is: 1,931.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.10 : 4,704.80 = 1,287.18 : x
  2. Step 2: Convert to fraction form
    3,136.10/4,704.80 = 1,287.18/x
  3. Step 3: Cross multiply
    3,136.10x = 4,704.80 × 1,287.18
  4. Step 4: Simplify right side
    3,136.10x = 6,055,918.03
  5. Step 5: Solve for x
    x = 6,055,918.03/3,136.10
  6. Step 6: Final answer
    x = 1,931.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.