Home / 3,211.85-4,432.32-1,885.68

Finding the Fourth Proportional to 3,211.85, 4,432.32 and 1,885.68

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Solution

The fourth proportional to 3,211.85, 4,432.32 and 1,885.68 is: 2,602.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.85 : 4,432.32 = 1,885.68 : x
  2. Step 2: Convert to fraction form
    3,211.85/4,432.32 = 1,885.68/x
  3. Step 3: Cross multiply
    3,211.85x = 4,432.32 × 1,885.68
  4. Step 4: Simplify right side
    3,211.85x = 8,357,937.18
  5. Step 5: Solve for x
    x = 8,357,937.18/3,211.85
  6. Step 6: Final answer
    x = 2,602.22

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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.