Home / 3,718.02-5,130.78-2,039.42

Finding the Fourth Proportional to 3,718.02, 5,130.78 and 2,039.42

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Solution

The fourth proportional to 3,718.02, 5,130.78 and 2,039.42 is: 2,814.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.02 : 5,130.78 = 2,039.42 : x
  2. Step 2: Convert to fraction form
    3,718.02/5,130.78 = 2,039.42/x
  3. Step 3: Cross multiply
    3,718.02x = 5,130.78 × 2,039.42
  4. Step 4: Simplify right side
    3,718.02x = 10,463,794.79
  5. Step 5: Solve for x
    x = 10,463,794.79/3,718.02
  6. Step 6: Final answer
    x = 2,814.34

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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.