Home / 1,228.26-1,695.80-948.00

Finding the Fourth Proportional to 1,228.26, 1,695.80 and 948.00

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Solution

The fourth proportional to 1,228.26, 1,695.80 and 948.00 is: 1,308.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228.26 : 1,695.80 = 948.00 : x
  2. Step 2: Convert to fraction form
    1,228.26/1,695.80 = 948.00/x
  3. Step 3: Cross multiply
    1,228.26x = 1,695.80 × 948.00
  4. Step 4: Simplify right side
    1,228.26x = 1,607,627.13
  5. Step 5: Solve for x
    x = 1,607,627.13/1,228.26
  6. Step 6: Final answer
    x = 1,308.86

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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.