Home / 1,206.24-1,809.60-931.84

Finding the Fourth Proportional to 1,206.24, 1,809.60 and 931.84

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Solution

The fourth proportional to 1,206.24, 1,809.60 and 931.84 is: 1,397.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,206.24 : 1,809.60 = 931.84 : x
  2. Step 2: Convert to fraction form
    1,206.24/1,809.60 = 931.84/x
  3. Step 3: Cross multiply
    1,206.24x = 1,809.60 × 931.84
  4. Step 4: Simplify right side
    1,206.24x = 1,686,257.66
  5. Step 5: Solve for x
    x = 1,686,257.66/1,206.24
  6. Step 6: Final answer
    x = 1,397.95

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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.