Home / 2,911.06-4,012.58-1,966.56

Finding the Fourth Proportional to 2,911.06, 4,012.58 and 1,966.56

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Solution

The fourth proportional to 2,911.06, 4,012.58 and 1,966.56 is: 2,710.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.06 : 4,012.58 = 1,966.56 : x
  2. Step 2: Convert to fraction form
    2,911.06/4,012.58 = 1,966.56/x
  3. Step 3: Cross multiply
    2,911.06x = 4,012.58 × 1,966.56
  4. Step 4: Simplify right side
    2,911.06x = 7,890,969.19
  5. Step 5: Solve for x
    x = 7,890,969.19/2,911.06
  6. Step 6: Final answer
    x = 2,710.68

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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.