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Finding the Fourth Proportional to 9,988.58, 13,784.08 and 5,451.22

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Solution

The fourth proportional to 9,988.58, 13,784.08 and 5,451.22 is: 7,522.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,988.58 : 13,784.08 = 5,451.22 : x
  2. Step 2: Convert to fraction form
    9,988.58/13,784.08 = 5,451.22/x
  3. Step 3: Cross multiply
    9,988.58x = 13,784.08 × 5,451.22
  4. Step 4: Simplify right side
    9,988.58x = 75,140,052.58
  5. Step 5: Solve for x
    x = 75,140,052.58/9,988.58
  6. Step 6: Final answer
    x = 7,522.60

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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.