Home / 3,087.60-4,260.98-1,690.34

Finding the Fourth Proportional to 3,087.60, 4,260.98 and 1,690.34

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Solution

The fourth proportional to 3,087.60, 4,260.98 and 1,690.34 is: 2,332.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,087.60 : 4,260.98 = 1,690.34 : x
  2. Step 2: Convert to fraction form
    3,087.60/4,260.98 = 1,690.34/x
  3. Step 3: Cross multiply
    3,087.60x = 4,260.98 × 1,690.34
  4. Step 4: Simplify right side
    3,087.60x = 7,202,504.93
  5. Step 5: Solve for x
    x = 7,202,504.93/3,087.60
  6. Step 6: Final answer
    x = 2,332.72

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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.