Home / 1,968.88-2,718.46-1,307.12

Finding the Fourth Proportional to 1,968.88, 2,718.46 and 1,307.12

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Solution

The fourth proportional to 1,968.88, 2,718.46 and 1,307.12 is: 1,804.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968.88 : 2,718.46 = 1,307.12 : x
  2. Step 2: Convert to fraction form
    1,968.88/2,718.46 = 1,307.12/x
  3. Step 3: Cross multiply
    1,968.88x = 2,718.46 × 1,307.12
  4. Step 4: Simplify right side
    1,968.88x = 3,553,353.44
  5. Step 5: Solve for x
    x = 3,553,353.44/1,968.88
  6. Step 6: Final answer
    x = 1,804.76

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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.