Home / 1,184.14-1,634.30-687.08

Finding the Fourth Proportional to 1,184.14, 1,634.30 and 687.08

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Solution

The fourth proportional to 1,184.14, 1,634.30 and 687.08 is: 948.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,184.14 : 1,634.30 = 687.08 : x
  2. Step 2: Convert to fraction form
    1,184.14/1,634.30 = 687.08/x
  3. Step 3: Cross multiply
    1,184.14x = 1,634.30 × 687.08
  4. Step 4: Simplify right side
    1,184.14x = 1,122,894.84
  5. Step 5: Solve for x
    x = 1,122,894.84/1,184.14
  6. Step 6: Final answer
    x = 948.28

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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.