Home / 2,239.21-3,089.64-1,355.08

Finding the Fourth Proportional to 2,239.21, 3,089.64 and 1,355.08

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Solution

The fourth proportional to 2,239.21, 3,089.64 and 1,355.08 is: 1,869.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,239.21 : 3,089.64 = 1,355.08 : x
  2. Step 2: Convert to fraction form
    2,239.21/3,089.64 = 1,355.08/x
  3. Step 3: Cross multiply
    2,239.21x = 3,089.64 × 1,355.08
  4. Step 4: Simplify right side
    2,239.21x = 4,186,709.37
  5. Step 5: Solve for x
    x = 4,186,709.37/2,239.21
  6. Step 6: Final answer
    x = 1,869.73

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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.