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Finding the Fourth Proportional to 9,863.55, 13,610.48 and 5,615.16

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Solution

The fourth proportional to 9,863.55, 13,610.48 and 5,615.16 is: 7,748.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,863.55 : 13,610.48 = 5,615.16 : x
  2. Step 2: Convert to fraction form
    9,863.55/13,610.48 = 5,615.16/x
  3. Step 3: Cross multiply
    9,863.55x = 13,610.48 × 5,615.16
  4. Step 4: Simplify right side
    9,863.55x = 76,424,994.80
  5. Step 5: Solve for x
    x = 76,424,994.80/9,863.55
  6. Step 6: Final answer
    x = 7,748.22

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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.