Home / 1,360.36-2,036.88-1,128.46

Finding the Fourth Proportional to 1,360.36, 2,036.88 and 1,128.46

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Solution

The fourth proportional to 1,360.36, 2,036.88 and 1,128.46 is: 1,689.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,360.36 : 2,036.88 = 1,128.46 : x
  2. Step 2: Convert to fraction form
    1,360.36/2,036.88 = 1,128.46/x
  3. Step 3: Cross multiply
    1,360.36x = 2,036.88 × 1,128.46
  4. Step 4: Simplify right side
    1,360.36x = 2,298,537.60
  5. Step 5: Solve for x
    x = 2,298,537.60/1,360.36
  6. Step 6: Final answer
    x = 1,689.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.