Home / 2,165.50-2,986.86-2,133.10

Finding the Fourth Proportional to 2,165.50, 2,986.86 and 2,133.10

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Solution

The fourth proportional to 2,165.50, 2,986.86 and 2,133.10 is: 2,942.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,165.50 : 2,986.86 = 2,133.10 : x
  2. Step 2: Convert to fraction form
    2,165.50/2,986.86 = 2,133.10/x
  3. Step 3: Cross multiply
    2,165.50x = 2,986.86 × 2,133.10
  4. Step 4: Simplify right side
    2,165.50x = 6,371,270.80
  5. Step 5: Solve for x
    x = 6,371,270.80/2,165.50
  6. Step 6: Final answer
    x = 2,942.17

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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.