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Finding the Fourth Proportional to 9,129.90, 12,599.33 and 5,774.16

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Solution

The fourth proportional to 9,129.90, 12,599.33 and 5,774.16 is: 7,968.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,129.90 : 12,599.33 = 5,774.16 : x
  2. Step 2: Convert to fraction form
    9,129.90/12,599.33 = 5,774.16/x
  3. Step 3: Cross multiply
    9,129.90x = 12,599.33 × 5,774.16
  4. Step 4: Simplify right side
    9,129.90x = 72,750,518.44
  5. Step 5: Solve for x
    x = 72,750,518.44/9,129.90
  6. Step 6: Final answer
    x = 7,968.38

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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.