Home / 3,178.40-4,384.69-2,059.70

Finding the Fourth Proportional to 3,178.40, 4,384.69 and 2,059.70

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Solution

The fourth proportional to 3,178.40, 4,384.69 and 2,059.70 is: 2,841.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.40 : 4,384.69 = 2,059.70 : x
  2. Step 2: Convert to fraction form
    3,178.40/4,384.69 = 2,059.70/x
  3. Step 3: Cross multiply
    3,178.40x = 4,384.69 × 2,059.70
  4. Step 4: Simplify right side
    3,178.40x = 9,031,118.92
  5. Step 5: Solve for x
    x = 9,031,118.92/3,178.40
  6. Step 6: Final answer
    x = 2,841.41

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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.