Home / 1,397.07-2,092.37-1,240.74

Finding the Fourth Proportional to 1,397.07, 2,092.37 and 1,240.74

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Solution

The fourth proportional to 1,397.07, 2,092.37 and 1,240.74 is: 1,858.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,397.07 : 2,092.37 = 1,240.74 : x
  2. Step 2: Convert to fraction form
    1,397.07/2,092.37 = 1,240.74/x
  3. Step 3: Cross multiply
    1,397.07x = 2,092.37 × 1,240.74
  4. Step 4: Simplify right side
    1,397.07x = 2,596,080.95
  5. Step 5: Solve for x
    x = 2,596,080.95/1,397.07
  6. Step 6: Final answer
    x = 1,858.23

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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.