Home / 2,628.39-3,941.28-1,240.53

Finding the Fourth Proportional to 2,628.39, 3,941.28 and 1,240.53

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Solution

The fourth proportional to 2,628.39, 3,941.28 and 1,240.53 is: 1,860.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,628.39 : 3,941.28 = 1,240.53 : x
  2. Step 2: Convert to fraction form
    2,628.39/3,941.28 = 1,240.53/x
  3. Step 3: Cross multiply
    2,628.39x = 3,941.28 × 1,240.53
  4. Step 4: Simplify right side
    2,628.39x = 4,889,276.08
  5. Step 5: Solve for x
    x = 4,889,276.08/2,628.39
  6. Step 6: Final answer
    x = 1,860.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.