Home / 1,386.63-2,080.26-1,140.26

Finding the Fourth Proportional to 1,386.63, 2,080.26 and 1,140.26

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Solution

The fourth proportional to 1,386.63, 2,080.26 and 1,140.26 is: 1,710.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386.63 : 2,080.26 = 1,140.26 : x
  2. Step 2: Convert to fraction form
    1,386.63/2,080.26 = 1,140.26/x
  3. Step 3: Cross multiply
    1,386.63x = 2,080.26 × 1,140.26
  4. Step 4: Simplify right side
    1,386.63x = 2,372,026.87
  5. Step 5: Solve for x
    x = 2,372,026.87/1,386.63
  6. Step 6: Final answer
    x = 1,710.64

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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.