Home / 1,518.10-2,275.80-998.35

Finding the Fourth Proportional to 1,518.10, 2,275.80 and 998.35

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Solution

The fourth proportional to 1,518.10, 2,275.80 and 998.35 is: 1,496.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,518.10 : 2,275.80 = 998.35 : x
  2. Step 2: Convert to fraction form
    1,518.10/2,275.80 = 998.35/x
  3. Step 3: Cross multiply
    1,518.10x = 2,275.80 × 998.35
  4. Step 4: Simplify right side
    1,518.10x = 2,272,044.93
  5. Step 5: Solve for x
    x = 2,272,044.93/1,518.10
  6. Step 6: Final answer
    x = 1,496.64

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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.