Home / 1,648.12-2,271.18-1,087.96

Finding the Fourth Proportional to 1,648.12, 2,271.18 and 1,087.96

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Solution

The fourth proportional to 1,648.12, 2,271.18 and 1,087.96 is: 1,499.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,648.12 : 2,271.18 = 1,087.96 : x
  2. Step 2: Convert to fraction form
    1,648.12/2,271.18 = 1,087.96/x
  3. Step 3: Cross multiply
    1,648.12x = 2,271.18 × 1,087.96
  4. Step 4: Simplify right side
    1,648.12x = 2,470,952.99
  5. Step 5: Solve for x
    x = 2,470,952.99/1,648.12
  6. Step 6: Final answer
    x = 1,499.26

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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.