Home / 1,768.32-2,440.40-1,178.44

Finding the Fourth Proportional to 1,768.32, 2,440.40 and 1,178.44

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Solution

The fourth proportional to 1,768.32, 2,440.40 and 1,178.44 is: 1,626.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,768.32 : 2,440.40 = 1,178.44 : x
  2. Step 2: Convert to fraction form
    1,768.32/2,440.40 = 1,178.44/x
  3. Step 3: Cross multiply
    1,768.32x = 2,440.40 × 1,178.44
  4. Step 4: Simplify right side
    1,768.32x = 2,875,864.98
  5. Step 5: Solve for x
    x = 2,875,864.98/1,768.32
  6. Step 6: Final answer
    x = 1,626.33

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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.