Home / 4,743.40-7,115.22-1,280.62

Finding the Fourth Proportional to 4,743.40, 7,115.22 and 1,280.62

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Solution

The fourth proportional to 4,743.40, 7,115.22 and 1,280.62 is: 1,920.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,743.40 : 7,115.22 = 1,280.62 : x
  2. Step 2: Convert to fraction form
    4,743.40/7,115.22 = 1,280.62/x
  3. Step 3: Cross multiply
    4,743.40x = 7,115.22 × 1,280.62
  4. Step 4: Simplify right side
    4,743.40x = 9,111,893.04
  5. Step 5: Solve for x
    x = 9,111,893.04/4,743.40
  6. Step 6: Final answer
    x = 1,920.96

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1.5x scale

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.