Home / 1,393.20-2,085.84-1,246.32

Finding the Fourth Proportional to 1,393.20, 2,085.84 and 1,246.32

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Solution

The fourth proportional to 1,393.20, 2,085.84 and 1,246.32 is: 1,865.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393.20 : 2,085.84 = 1,246.32 : x
  2. Step 2: Convert to fraction form
    1,393.20/2,085.84 = 1,246.32/x
  3. Step 3: Cross multiply
    1,393.20x = 2,085.84 × 1,246.32
  4. Step 4: Simplify right side
    1,393.20x = 2,599,624.11
  5. Step 5: Solve for x
    x = 2,599,624.11/1,393.20
  6. Step 6: Final answer
    x = 1,865.94

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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.