Home / 1,098.26-1,513.82-1,007.76

Finding the Fourth Proportional to 1,098.26, 1,513.82 and 1,007.76

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Solution

The fourth proportional to 1,098.26, 1,513.82 and 1,007.76 is: 1,389.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098.26 : 1,513.82 = 1,007.76 : x
  2. Step 2: Convert to fraction form
    1,098.26/1,513.82 = 1,007.76/x
  3. Step 3: Cross multiply
    1,098.26x = 1,513.82 × 1,007.76
  4. Step 4: Simplify right side
    1,098.26x = 1,525,567.24
  5. Step 5: Solve for x
    x = 1,525,567.24/1,098.26
  6. Step 6: Final answer
    x = 1,389.08

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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.