Home / 3,621.48-5,430.18-1,155.72

Finding the Fourth Proportional to 3,621.48, 5,430.18 and 1,155.72

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Solution

The fourth proportional to 3,621.48, 5,430.18 and 1,155.72 is: 1,732.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.48 : 5,430.18 = 1,155.72 : x
  2. Step 2: Convert to fraction form
    3,621.48/5,430.18 = 1,155.72/x
  3. Step 3: Cross multiply
    3,621.48x = 5,430.18 × 1,155.72
  4. Step 4: Simplify right side
    3,621.48x = 6,275,767.63
  5. Step 5: Solve for x
    x = 6,275,767.63/3,621.48
  6. Step 6: Final answer
    x = 1,732.93

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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.