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Finding the Fourth Proportional to 3,690.84, 5,530.10 and 2,649.28

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Solution

The fourth proportional to 3,690.84, 5,530.10 and 2,649.28 is: 3,969.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,690.84 : 5,530.10 = 2,649.28 : x
  2. Step 2: Convert to fraction form
    3,690.84/5,530.10 = 2,649.28/x
  3. Step 3: Cross multiply
    3,690.84x = 5,530.10 × 2,649.28
  4. Step 4: Simplify right side
    3,690.84x = 14,650,776.13
  5. Step 5: Solve for x
    x = 14,650,776.13/3,690.84
  6. Step 6: Final answer
    x = 3,969.50

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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.