Home / 3,711.18-5,120.10-2,384.40

Finding the Fourth Proportional to 3,711.18, 5,120.10 and 2,384.40

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Solution

The fourth proportional to 3,711.18, 5,120.10 and 2,384.40 is: 3,289.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,711.18 : 5,120.10 = 2,384.40 : x
  2. Step 2: Convert to fraction form
    3,711.18/5,120.10 = 2,384.40/x
  3. Step 3: Cross multiply
    3,711.18x = 5,120.10 × 2,384.40
  4. Step 4: Simplify right side
    3,711.18x = 12,208,366.44
  5. Step 5: Solve for x
    x = 12,208,366.44/3,711.18
  6. Step 6: Final answer
    x = 3,289.62

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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.