Home / 2,040.48-2,815.88-1,108.98

Finding the Fourth Proportional to 2,040.48, 2,815.88 and 1,108.98

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Solution

The fourth proportional to 2,040.48, 2,815.88 and 1,108.98 is: 1,530.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,040.48 : 2,815.88 = 1,108.98 : x
  2. Step 2: Convert to fraction form
    2,040.48/2,815.88 = 1,108.98/x
  3. Step 3: Cross multiply
    2,040.48x = 2,815.88 × 1,108.98
  4. Step 4: Simplify right side
    2,040.48x = 3,122,749.06
  5. Step 5: Solve for x
    x = 3,122,749.06/2,040.48
  6. Step 6: Final answer
    x = 1,530.40

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1.5x scale

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.