Home / 2,920.70-4,030.20-2,133.38

Finding the Fourth Proportional to 2,920.70, 4,030.20 and 2,133.38

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Solution

The fourth proportional to 2,920.70, 4,030.20 and 2,133.38 is: 2,943.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.70 : 4,030.20 = 2,133.38 : x
  2. Step 2: Convert to fraction form
    2,920.70/4,030.20 = 2,133.38/x
  3. Step 3: Cross multiply
    2,920.70x = 4,030.20 × 2,133.38
  4. Step 4: Simplify right side
    2,920.70x = 8,597,927.93
  5. Step 5: Solve for x
    x = 8,597,927.93/2,920.70
  6. Step 6: Final answer
    x = 2,943.80

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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.