Home / 1,911.46-2,867.56-612.68

Finding the Fourth Proportional to 1,911.46, 2,867.56 and 612.68

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Solution

The fourth proportional to 1,911.46, 2,867.56 and 612.68 is: 919.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.46 : 2,867.56 = 612.68 : x
  2. Step 2: Convert to fraction form
    1,911.46/2,867.56 = 612.68/x
  3. Step 3: Cross multiply
    1,911.46x = 2,867.56 × 612.68
  4. Step 4: Simplify right side
    1,911.46x = 1,756,896.66
  5. Step 5: Solve for x
    x = 1,756,896.66/1,911.46
  6. Step 6: Final answer
    x = 919.14

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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.