Home / 2,486.09-3,430.59-1,438.22

Finding the Fourth Proportional to 2,486.09, 3,430.59 and 1,438.22

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Solution

The fourth proportional to 2,486.09, 3,430.59 and 1,438.22 is: 1,984.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,486.09 : 3,430.59 = 1,438.22 : x
  2. Step 2: Convert to fraction form
    2,486.09/3,430.59 = 1,438.22/x
  3. Step 3: Cross multiply
    2,486.09x = 3,430.59 × 1,438.22
  4. Step 4: Simplify right side
    2,486.09x = 4,933,926.00
  5. Step 5: Solve for x
    x = 4,933,926.00/2,486.09
  6. Step 6: Final answer
    x = 1,984.62

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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.