Home / 9,861.12-13,608.45-5,384.97

Finding the Fourth Proportional to 9,861.12, 13,608.45 and 5,384.97

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Solution

The fourth proportional to 9,861.12, 13,608.45 and 5,384.97 is: 7,431.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,861.12 : 13,608.45 = 5,384.97 : x
  2. Step 2: Convert to fraction form
    9,861.12/13,608.45 = 5,384.97/x
  3. Step 3: Cross multiply
    9,861.12x = 13,608.45 × 5,384.97
  4. Step 4: Simplify right side
    9,861.12x = 73,281,095.00
  5. Step 5: Solve for x
    x = 73,281,095.00/9,861.12
  6. Step 6: Final answer
    x = 7,431.32

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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.