Home / 9,884.19-13,640.09-5,407.89

Finding the Fourth Proportional to 9,884.19, 13,640.09 and 5,407.89

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Solution

The fourth proportional to 9,884.19, 13,640.09 and 5,407.89 is: 7,462.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,884.19 : 13,640.09 = 5,407.89 : x
  2. Step 2: Convert to fraction form
    9,884.19/13,640.09 = 5,407.89/x
  3. Step 3: Cross multiply
    9,884.19x = 13,640.09 × 5,407.89
  4. Step 4: Simplify right side
    9,884.19x = 73,764,079.27
  5. Step 5: Solve for x
    x = 73,764,079.27/9,884.19
  6. Step 6: Final answer
    x = 7,462.84

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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.