Home / 1,386.63-2,077.51-1,235.97

Finding the Fourth Proportional to 1,386.63, 2,077.51 and 1,235.97

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Solution

The fourth proportional to 1,386.63, 2,077.51 and 1,235.97 is: 1,851.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386.63 : 2,077.51 = 1,235.97 : x
  2. Step 2: Convert to fraction form
    1,386.63/2,077.51 = 1,235.97/x
  3. Step 3: Cross multiply
    1,386.63x = 2,077.51 × 1,235.97
  4. Step 4: Simplify right side
    1,386.63x = 2,567,740.03
  5. Step 5: Solve for x
    x = 2,567,740.03/1,386.63
  6. Step 6: Final answer
    x = 1,851.78

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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.