Home / 1,415.26-2,111.54-1,207.45

Finding the Fourth Proportional to 1,415.26, 2,111.54 and 1,207.45

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Solution

The fourth proportional to 1,415.26, 2,111.54 and 1,207.45 is: 1,801.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,415.26 : 2,111.54 = 1,207.45 : x
  2. Step 2: Convert to fraction form
    1,415.26/2,111.54 = 1,207.45/x
  3. Step 3: Cross multiply
    1,415.26x = 2,111.54 × 1,207.45
  4. Step 4: Simplify right side
    1,415.26x = 2,549,578.97
  5. Step 5: Solve for x
    x = 2,549,578.97/1,415.26
  6. Step 6: Final answer
    x = 1,801.49

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1.5x scale

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.