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Finding the Fourth Proportional to 2,783.72, 4,176.40 and 836.22

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Solution

The fourth proportional to 2,783.72, 4,176.40 and 836.22 is: 1,254.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,783.72 : 4,176.40 = 836.22 : x
  2. Step 2: Convert to fraction form
    2,783.72/4,176.40 = 836.22/x
  3. Step 3: Cross multiply
    2,783.72x = 4,176.40 × 836.22
  4. Step 4: Simplify right side
    2,783.72x = 3,492,389.21
  5. Step 5: Solve for x
    x = 3,492,389.21/2,783.72
  6. Step 6: Final answer
    x = 1,254.58

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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.