Home / 4,287.03-5,918.76-3,290.40

Finding the Fourth Proportional to 4,287.03, 5,918.76 and 3,290.40

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Solution

The fourth proportional to 4,287.03, 5,918.76 and 3,290.40 is: 4,542.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,287.03 : 5,918.76 = 3,290.40 : x
  2. Step 2: Convert to fraction form
    4,287.03/5,918.76 = 3,290.40/x
  3. Step 3: Cross multiply
    4,287.03x = 5,918.76 × 3,290.40
  4. Step 4: Simplify right side
    4,287.03x = 19,475,087.90
  5. Step 5: Solve for x
    x = 19,475,087.90/4,287.03
  6. Step 6: Final answer
    x = 4,542.79

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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.