Home / 1,355.44-1,867.80-1,148.08

Finding the Fourth Proportional to 1,355.44, 1,867.80 and 1,148.08

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Solution

The fourth proportional to 1,355.44, 1,867.80 and 1,148.08 is: 1,582.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355.44 : 1,867.80 = 1,148.08 : x
  2. Step 2: Convert to fraction form
    1,355.44/1,867.80 = 1,148.08/x
  3. Step 3: Cross multiply
    1,355.44x = 1,867.80 × 1,148.08
  4. Step 4: Simplify right side
    1,355.44x = 2,144,383.82
  5. Step 5: Solve for x
    x = 2,144,383.82/1,355.44
  6. Step 6: Final answer
    x = 1,582.06

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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.