Home / 1,340.88-1,847.64-1,077.84

Finding the Fourth Proportional to 1,340.88, 1,847.64 and 1,077.84

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Solution

The fourth proportional to 1,340.88, 1,847.64 and 1,077.84 is: 1,485.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,340.88 : 1,847.64 = 1,077.84 : x
  2. Step 2: Convert to fraction form
    1,340.88/1,847.64 = 1,077.84/x
  3. Step 3: Cross multiply
    1,340.88x = 1,847.64 × 1,077.84
  4. Step 4: Simplify right side
    1,340.88x = 1,991,460.30
  5. Step 5: Solve for x
    x = 1,991,460.30/1,340.88
  6. Step 6: Final answer
    x = 1,485.19

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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.