Home / 3,211.55-4,430.99-1,885.31

Finding the Fourth Proportional to 3,211.55, 4,430.99 and 1,885.31

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Solution

The fourth proportional to 3,211.55, 4,430.99 and 1,885.31 is: 2,601.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.55 : 4,430.99 = 1,885.31 : x
  2. Step 2: Convert to fraction form
    3,211.55/4,430.99 = 1,885.31/x
  3. Step 3: Cross multiply
    3,211.55x = 4,430.99 × 1,885.31
  4. Step 4: Simplify right side
    3,211.55x = 8,353,772.32
  5. Step 5: Solve for x
    x = 8,353,772.32/3,211.55
  6. Step 6: Final answer
    x = 2,601.17

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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.