Home / 1,488.40-2,053.64-867.44

Finding the Fourth Proportional to 1,488.40, 2,053.64 and 867.44

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Solution

The fourth proportional to 1,488.40, 2,053.64 and 867.44 is: 1,196.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,488.40 : 2,053.64 = 867.44 : x
  2. Step 2: Convert to fraction form
    1,488.40/2,053.64 = 867.44/x
  3. Step 3: Cross multiply
    1,488.40x = 2,053.64 × 867.44
  4. Step 4: Simplify right side
    1,488.40x = 1,781,409.48
  5. Step 5: Solve for x
    x = 1,781,409.48/1,488.40
  6. Step 6: Final answer
    x = 1,196.86

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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.