Home / 3,431.10-4,727.79-2,642.70

Finding the Fourth Proportional to 3,431.10, 4,727.79 and 2,642.70

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Solution

The fourth proportional to 3,431.10, 4,727.79 and 2,642.70 is: 3,641.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.10 : 4,727.79 = 2,642.70 : x
  2. Step 2: Convert to fraction form
    3,431.10/4,727.79 = 2,642.70/x
  3. Step 3: Cross multiply
    3,431.10x = 4,727.79 × 2,642.70
  4. Step 4: Simplify right side
    3,431.10x = 12,494,130.63
  5. Step 5: Solve for x
    x = 12,494,130.63/3,431.10
  6. Step 6: Final answer
    x = 3,641.44

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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.