Home / 3,619.76-5,430.04-1,153.72

Finding the Fourth Proportional to 3,619.76, 5,430.04 and 1,153.72

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Solution

The fourth proportional to 3,619.76, 5,430.04 and 1,153.72 is: 1,730.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.76 : 5,430.04 = 1,153.72 : x
  2. Step 2: Convert to fraction form
    3,619.76/5,430.04 = 1,153.72/x
  3. Step 3: Cross multiply
    3,619.76x = 5,430.04 × 1,153.72
  4. Step 4: Simplify right side
    3,619.76x = 6,264,745.75
  5. Step 5: Solve for x
    x = 6,264,745.75/3,619.76
  6. Step 6: Final answer
    x = 1,730.71

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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.