Home / 2,783.90-4,176.20-935.21

Finding the Fourth Proportional to 2,783.90, 4,176.20 and 935.21

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Solution

The fourth proportional to 2,783.90, 4,176.20 and 935.21 is: 1,402.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,783.90 : 4,176.20 = 935.21 : x
  2. Step 2: Convert to fraction form
    2,783.90/4,176.20 = 935.21/x
  3. Step 3: Cross multiply
    2,783.90x = 4,176.20 × 935.21
  4. Step 4: Simplify right side
    2,783.90x = 3,905,636.78
  5. Step 5: Solve for x
    x = 3,905,636.78/2,783.90
  6. Step 6: Final answer
    x = 1,402.94

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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.