Home / 1,988.19-2,983.10-1,064.79

Finding the Fourth Proportional to 1,988.19, 2,983.10 and 1,064.79

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Solution

The fourth proportional to 1,988.19, 2,983.10 and 1,064.79 is: 1,597.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.19 : 2,983.10 = 1,064.79 : x
  2. Step 2: Convert to fraction form
    1,988.19/2,983.10 = 1,064.79/x
  3. Step 3: Cross multiply
    1,988.19x = 2,983.10 × 1,064.79
  4. Step 4: Simplify right side
    1,988.19x = 3,176,369.73
  5. Step 5: Solve for x
    x = 3,176,369.73/1,988.19
  6. Step 6: Final answer
    x = 1,597.62

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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.