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Finding the Fourth Proportional to 3,461.76, 5,189.76 and 2,695.68

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Solution

The fourth proportional to 3,461.76, 5,189.76 and 2,695.68 is: 4,041.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,461.76 : 5,189.76 = 2,695.68 : x
  2. Step 2: Convert to fraction form
    3,461.76/5,189.76 = 2,695.68/x
  3. Step 3: Cross multiply
    3,461.76x = 5,189.76 × 2,695.68
  4. Step 4: Simplify right side
    3,461.76x = 13,989,932.24
  5. Step 5: Solve for x
    x = 13,989,932.24/3,461.76
  6. Step 6: Final answer
    x = 4,041.28

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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.