Home / 3,087.50-4,260.76-1,690.26

Finding the Fourth Proportional to 3,087.50, 4,260.76 and 1,690.26

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Solution

The fourth proportional to 3,087.50, 4,260.76 and 1,690.26 is: 2,332.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,087.50 : 4,260.76 = 1,690.26 : x
  2. Step 2: Convert to fraction form
    3,087.50/4,260.76 = 1,690.26/x
  3. Step 3: Cross multiply
    3,087.50x = 4,260.76 × 1,690.26
  4. Step 4: Simplify right side
    3,087.50x = 7,201,792.20
  5. Step 5: Solve for x
    x = 7,201,792.20/3,087.50
  6. Step 6: Final answer
    x = 2,332.56

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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.