Home / 1,968.89-2,718.45-1,307.12

Finding the Fourth Proportional to 1,968.89, 2,718.45 and 1,307.12

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Solution

The fourth proportional to 1,968.89, 2,718.45 and 1,307.12 is: 1,804.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968.89 : 2,718.45 = 1,307.12 : x
  2. Step 2: Convert to fraction form
    1,968.89/2,718.45 = 1,307.12/x
  3. Step 3: Cross multiply
    1,968.89x = 2,718.45 × 1,307.12
  4. Step 4: Simplify right side
    1,968.89x = 3,553,326.77
  5. Step 5: Solve for x
    x = 3,553,326.77/1,968.89
  6. Step 6: Final answer
    x = 1,804.74

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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.