Home / 3,148.20-4,722.80-1,068.40

Finding the Fourth Proportional to 3,148.20, 4,722.80 and 1,068.40

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Solution

The fourth proportional to 3,148.20, 4,722.80 and 1,068.40 is: 1,602.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,148.20 : 4,722.80 = 1,068.40 : x
  2. Step 2: Convert to fraction form
    3,148.20/4,722.80 = 1,068.40/x
  3. Step 3: Cross multiply
    3,148.20x = 4,722.80 × 1,068.40
  4. Step 4: Simplify right side
    3,148.20x = 5,045,839.52
  5. Step 5: Solve for x
    x = 5,045,839.52/3,148.20
  6. Step 6: Final answer
    x = 1,602.77

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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.