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Finding the Fourth Proportional to 1,803.69, 2,488.91 and 1,006.97

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Solution

The fourth proportional to 1,803.69, 2,488.91 and 1,006.97 is: 1,389.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,803.69 : 2,488.91 = 1,006.97 : x
  2. Step 2: Convert to fraction form
    1,803.69/2,488.91 = 1,006.97/x
  3. Step 3: Cross multiply
    1,803.69x = 2,488.91 × 1,006.97
  4. Step 4: Simplify right side
    1,803.69x = 2,506,240.22
  5. Step 5: Solve for x
    x = 2,506,240.22/1,803.69
  6. Step 6: Final answer
    x = 1,389.51

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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.