Home / 3,903.02-5,385.44-2,309.30

Finding the Fourth Proportional to 3,903.02, 5,385.44 and 2,309.30

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Solution

The fourth proportional to 3,903.02, 5,385.44 and 2,309.30 is: 3,186.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,903.02 : 5,385.44 = 2,309.30 : x
  2. Step 2: Convert to fraction form
    3,903.02/5,385.44 = 2,309.30/x
  3. Step 3: Cross multiply
    3,903.02x = 5,385.44 × 2,309.30
  4. Step 4: Simplify right side
    3,903.02x = 12,436,585.05
  5. Step 5: Solve for x
    x = 12,436,585.05/3,903.02
  6. Step 6: Final answer
    x = 3,186.40

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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.