Home / 1,968.80-2,717.96-1,306.76

Finding the Fourth Proportional to 1,968.80, 2,717.96 and 1,306.76

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Solution

The fourth proportional to 1,968.80, 2,717.96 and 1,306.76 is: 1,804.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968.80 : 2,717.96 = 1,306.76 : x
  2. Step 2: Convert to fraction form
    1,968.80/2,717.96 = 1,306.76/x
  3. Step 3: Cross multiply
    1,968.80x = 2,717.96 × 1,306.76
  4. Step 4: Simplify right side
    1,968.80x = 3,551,721.41
  5. Step 5: Solve for x
    x = 3,551,721.41/1,968.80
  6. Step 6: Final answer
    x = 1,804.00

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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.