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Finding the Fourth Proportional to 3,457.72, 4,770.11 and 2,130.94

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Solution

The fourth proportional to 3,457.72, 4,770.11 and 2,130.94 is: 2,939.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,457.72 : 4,770.11 = 2,130.94 : x
  2. Step 2: Convert to fraction form
    3,457.72/4,770.11 = 2,130.94/x
  3. Step 3: Cross multiply
    3,457.72x = 4,770.11 × 2,130.94
  4. Step 4: Simplify right side
    3,457.72x = 10,164,818.20
  5. Step 5: Solve for x
    x = 10,164,818.20/3,457.72
  6. Step 6: Final answer
    x = 2,939.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.