Home / 4,090.78-6,136.75-1,316.81

Finding the Fourth Proportional to 4,090.78, 6,136.75 and 1,316.81

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Solution

The fourth proportional to 4,090.78, 6,136.75 and 1,316.81 is: 1,975.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,090.78 : 6,136.75 = 1,316.81 : x
  2. Step 2: Convert to fraction form
    4,090.78/6,136.75 = 1,316.81/x
  3. Step 3: Cross multiply
    4,090.78x = 6,136.75 × 1,316.81
  4. Step 4: Simplify right side
    4,090.78x = 8,080,933.77
  5. Step 5: Solve for x
    x = 8,080,933.77/4,090.78
  6. Step 6: Final answer
    x = 1,975.40

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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.