Home / 3,148.28-4,722.50-1,392.91

Finding the Fourth Proportional to 3,148.28, 4,722.50 and 1,392.91

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Solution

The fourth proportional to 3,148.28, 4,722.50 and 1,392.91 is: 2,089.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,148.28 : 4,722.50 = 1,392.91 : x
  2. Step 2: Convert to fraction form
    3,148.28/4,722.50 = 1,392.91/x
  3. Step 3: Cross multiply
    3,148.28x = 4,722.50 × 1,392.91
  4. Step 4: Simplify right side
    3,148.28x = 6,578,013.99
  5. Step 5: Solve for x
    x = 6,578,013.99/3,148.28
  6. Step 6: Final answer
    x = 2,089.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.