Home / 9,861.12-14,774.85-5,422.51

Finding the Fourth Proportional to 9,861.12, 14,774.85 and 5,422.51

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Solution

The fourth proportional to 9,861.12, 14,774.85 and 5,422.51 is: 8,124.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,861.12 : 14,774.85 = 5,422.51 : x
  2. Step 2: Convert to fraction form
    9,861.12/14,774.85 = 5,422.51/x
  3. Step 3: Cross multiply
    9,861.12x = 14,774.85 × 5,422.51
  4. Step 4: Simplify right side
    9,861.12x = 80,116,734.94
  5. Step 5: Solve for x
    x = 80,116,734.94/9,861.12
  6. Step 6: Final answer
    x = 8,124.51

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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.