Home / 3,987.08-5,504.48-2,665.16

Finding the Fourth Proportional to 3,987.08, 5,504.48 and 2,665.16

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Solution

The fourth proportional to 3,987.08, 5,504.48 and 2,665.16 is: 3,679.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.08 : 5,504.48 = 2,665.16 : x
  2. Step 2: Convert to fraction form
    3,987.08/5,504.48 = 2,665.16/x
  3. Step 3: Cross multiply
    3,987.08x = 5,504.48 × 2,665.16
  4. Step 4: Simplify right side
    3,987.08x = 14,670,319.92
  5. Step 5: Solve for x
    x = 14,670,319.92/3,987.08
  6. Step 6: Final answer
    x = 3,679.46

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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.