Home / 1,386.36-2,066.32-1,308.52

Finding the Fourth Proportional to 1,386.36, 2,066.32 and 1,308.52

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Solution

The fourth proportional to 1,386.36, 2,066.32 and 1,308.52 is: 1,950.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386.36 : 2,066.32 = 1,308.52 : x
  2. Step 2: Convert to fraction form
    1,386.36/2,066.32 = 1,308.52/x
  3. Step 3: Cross multiply
    1,386.36x = 2,066.32 × 1,308.52
  4. Step 4: Simplify right side
    1,386.36x = 2,703,821.05
  5. Step 5: Solve for x
    x = 2,703,821.05/1,386.36
  6. Step 6: Final answer
    x = 1,950.30

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.