Home / 4,087.47-5,642.71-2,742.60

Finding the Fourth Proportional to 4,087.47, 5,642.71 and 2,742.60

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Solution

The fourth proportional to 4,087.47, 5,642.71 and 2,742.60 is: 3,786.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,087.47 : 5,642.71 = 2,742.60 : x
  2. Step 2: Convert to fraction form
    4,087.47/5,642.71 = 2,742.60/x
  3. Step 3: Cross multiply
    4,087.47x = 5,642.71 × 2,742.60
  4. Step 4: Simplify right side
    4,087.47x = 15,475,669.15
  5. Step 5: Solve for x
    x = 15,475,669.15/4,087.47
  6. Step 6: Final answer
    x = 3,786.13

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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.