Home / 3,987.26-5,501.54-2,415.74

Finding the Fourth Proportional to 3,987.26, 5,501.54 and 2,415.74

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Solution

The fourth proportional to 3,987.26, 5,501.54 and 2,415.74 is: 3,333.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.26 : 5,501.54 = 2,415.74 : x
  2. Step 2: Convert to fraction form
    3,987.26/5,501.54 = 2,415.74/x
  3. Step 3: Cross multiply
    3,987.26x = 5,501.54 × 2,415.74
  4. Step 4: Simplify right side
    3,987.26x = 13,290,290.24
  5. Step 5: Solve for x
    x = 13,290,290.24/3,987.26
  6. Step 6: Final answer
    x = 3,333.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.