Home / 3,415.48-4,712.94-2,156.05

Finding the Fourth Proportional to 3,415.48, 4,712.94 and 2,156.05

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Solution

The fourth proportional to 3,415.48, 4,712.94 and 2,156.05 is: 2,975.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,415.48 : 4,712.94 = 2,156.05 : x
  2. Step 2: Convert to fraction form
    3,415.48/4,712.94 = 2,156.05/x
  3. Step 3: Cross multiply
    3,415.48x = 4,712.94 × 2,156.05
  4. Step 4: Simplify right side
    3,415.48x = 10,161,334.29
  5. Step 5: Solve for x
    x = 10,161,334.29/3,415.48
  6. Step 6: Final answer
    x = 2,975.08

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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.