Home / 1,530.99-2,112.81-867.95

Finding the Fourth Proportional to 1,530.99, 2,112.81 and 867.95

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Solution

The fourth proportional to 1,530.99, 2,112.81 and 867.95 is: 1,197.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,530.99 : 2,112.81 = 867.95 : x
  2. Step 2: Convert to fraction form
    1,530.99/2,112.81 = 867.95/x
  3. Step 3: Cross multiply
    1,530.99x = 2,112.81 × 867.95
  4. Step 4: Simplify right side
    1,530.99x = 1,833,802.88
  5. Step 5: Solve for x
    x = 1,833,802.88/1,530.99
  6. Step 6: Final answer
    x = 1,197.79

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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.