Home / 3,087.31-4,260.54-1,690.06

Finding the Fourth Proportional to 3,087.31, 4,260.54 and 1,690.06

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Solution

The fourth proportional to 3,087.31, 4,260.54 and 1,690.06 is: 2,332.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,087.31 : 4,260.54 = 1,690.06 : x
  2. Step 2: Convert to fraction form
    3,087.31/4,260.54 = 1,690.06/x
  3. Step 3: Cross multiply
    3,087.31x = 4,260.54 × 1,690.06
  4. Step 4: Simplify right side
    3,087.31x = 7,200,568.23
  5. Step 5: Solve for x
    x = 7,200,568.23/3,087.31
  6. Step 6: Final answer
    x = 2,332.31

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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.