Home / 1,988.08-2,979.69-1,013.65

Finding the Fourth Proportional to 1,988.08, 2,979.69 and 1,013.65

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Solution

The fourth proportional to 1,988.08, 2,979.69 and 1,013.65 is: 1,519.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.08 : 2,979.69 = 1,013.65 : x
  2. Step 2: Convert to fraction form
    1,988.08/2,979.69 = 1,013.65/x
  3. Step 3: Cross multiply
    1,988.08x = 2,979.69 × 1,013.65
  4. Step 4: Simplify right side
    1,988.08x = 3,020,362.77
  5. Step 5: Solve for x
    x = 3,020,362.77/1,988.08
  6. Step 6: Final answer
    x = 1,519.24

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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.