Home / 1,620.36-2,235.87-948.06

Finding the Fourth Proportional to 1,620.36, 2,235.87 and 948.06

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Solution

The fourth proportional to 1,620.36, 2,235.87 and 948.06 is: 1,308.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620.36 : 2,235.87 = 948.06 : x
  2. Step 2: Convert to fraction form
    1,620.36/2,235.87 = 948.06/x
  3. Step 3: Cross multiply
    1,620.36x = 2,235.87 × 948.06
  4. Step 4: Simplify right side
    1,620.36x = 2,119,738.91
  5. Step 5: Solve for x
    x = 2,119,738.91/1,620.36
  6. Step 6: Final answer
    x = 1,308.19

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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.