Home / 9,883.26-13,638.44-5,407.20

Finding the Fourth Proportional to 9,883.26, 13,638.44 and 5,407.20

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Solution

The fourth proportional to 9,883.26, 13,638.44 and 5,407.20 is: 7,461.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,883.26 : 13,638.44 = 5,407.20 : x
  2. Step 2: Convert to fraction form
    9,883.26/13,638.44 = 5,407.20/x
  3. Step 3: Cross multiply
    9,883.26x = 13,638.44 × 5,407.20
  4. Step 4: Simplify right side
    9,883.26x = 73,745,772.77
  5. Step 5: Solve for x
    x = 73,745,772.77/9,883.26
  6. Step 6: Final answer
    x = 7,461.68

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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.