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Finding the Fourth Proportional to 3,347.30, 4,619.21 and 1,855.22

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Solution

The fourth proportional to 3,347.30, 4,619.21 and 1,855.22 is: 2,560.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,347.30 : 4,619.21 = 1,855.22 : x
  2. Step 2: Convert to fraction form
    3,347.30/4,619.21 = 1,855.22/x
  3. Step 3: Cross multiply
    3,347.30x = 4,619.21 × 1,855.22
  4. Step 4: Simplify right side
    3,347.30x = 8,569,618.40
  5. Step 5: Solve for x
    x = 8,569,618.40/3,347.30
  6. Step 6: Final answer
    x = 2,560.16

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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.