Home / 3,415.21-4,711.29-2,086.60

Finding the Fourth Proportional to 3,415.21, 4,711.29 and 2,086.60

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Solution

The fourth proportional to 3,415.21, 4,711.29 and 2,086.60 is: 2,878.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,415.21 : 4,711.29 = 2,086.60 : x
  2. Step 2: Convert to fraction form
    3,415.21/4,711.29 = 2,086.60/x
  3. Step 3: Cross multiply
    3,415.21x = 4,711.29 × 2,086.60
  4. Step 4: Simplify right side
    3,415.21x = 9,830,577.71
  5. Step 5: Solve for x
    x = 9,830,577.71/3,415.21
  6. Step 6: Final answer
    x = 2,878.47

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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.