Home / 3,930.49-5,423.95-2,162.08

Finding the Fourth Proportional to 3,930.49, 5,423.95 and 2,162.08

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Solution

The fourth proportional to 3,930.49, 5,423.95 and 2,162.08 is: 2,983.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.49 : 5,423.95 = 2,162.08 : x
  2. Step 2: Convert to fraction form
    3,930.49/5,423.95 = 2,162.08/x
  3. Step 3: Cross multiply
    3,930.49x = 5,423.95 × 2,162.08
  4. Step 4: Simplify right side
    3,930.49x = 11,727,011.14
  5. Step 5: Solve for x
    x = 11,727,011.14/3,930.49
  6. Step 6: Final answer
    x = 2,983.60

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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.