Home / 2,262.42-3,390.80-1,289.07

Finding the Fourth Proportional to 2,262.42, 3,390.80 and 1,289.07

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Solution

The fourth proportional to 2,262.42, 3,390.80 and 1,289.07 is: 1,931.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,262.42 : 3,390.80 = 1,289.07 : x
  2. Step 2: Convert to fraction form
    2,262.42/3,390.80 = 1,289.07/x
  3. Step 3: Cross multiply
    2,262.42x = 3,390.80 × 1,289.07
  4. Step 4: Simplify right side
    2,262.42x = 4,370,972.11
  5. Step 5: Solve for x
    x = 4,370,972.11/2,262.42
  6. Step 6: Final answer
    x = 1,931.99

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1.5x scale

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.