Home / 3,622.42-5,431.98-1,430.76

Finding the Fourth Proportional to 3,622.42, 5,431.98 and 1,430.76

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Solution

The fourth proportional to 3,622.42, 5,431.98 and 1,430.76 is: 2,145.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,622.42 : 5,431.98 = 1,430.76 : x
  2. Step 2: Convert to fraction form
    3,622.42/5,431.98 = 1,430.76/x
  3. Step 3: Cross multiply
    3,622.42x = 5,431.98 × 1,430.76
  4. Step 4: Simplify right side
    3,622.42x = 7,771,859.70
  5. Step 5: Solve for x
    x = 7,771,859.70/3,622.42
  6. Step 6: Final answer
    x = 2,145.49

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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.