Home / 3,130.74-4,318.01-2,186.22

Finding the Fourth Proportional to 3,130.74, 4,318.01 and 2,186.22

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Solution

The fourth proportional to 3,130.74, 4,318.01 and 2,186.22 is: 3,015.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.74 : 4,318.01 = 2,186.22 : x
  2. Step 2: Convert to fraction form
    3,130.74/4,318.01 = 2,186.22/x
  3. Step 3: Cross multiply
    3,130.74x = 4,318.01 × 2,186.22
  4. Step 4: Simplify right side
    3,130.74x = 9,440,119.82
  5. Step 5: Solve for x
    x = 9,440,119.82/3,130.74
  6. Step 6: Final answer
    x = 3,015.30

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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.