Home / 3,621.16-5,431.65-1,156.15

Finding the Fourth Proportional to 3,621.16, 5,431.65 and 1,156.15

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Solution

The fourth proportional to 3,621.16, 5,431.65 and 1,156.15 is: 1,734.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.16 : 5,431.65 = 1,156.15 : x
  2. Step 2: Convert to fraction form
    3,621.16/5,431.65 = 1,156.15/x
  3. Step 3: Cross multiply
    3,621.16x = 5,431.65 × 1,156.15
  4. Step 4: Simplify right side
    3,621.16x = 6,279,802.15
  5. Step 5: Solve for x
    x = 6,279,802.15/3,621.16
  6. Step 6: Final answer
    x = 1,734.20

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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.