Home / 9,129.65-12,599.35-5,352.75

Finding the Fourth Proportional to 9,129.65, 12,599.35 and 5,352.75

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Solution

The fourth proportional to 9,129.65, 12,599.35 and 5,352.75 is: 7,387.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,129.65 : 12,599.35 = 5,352.75 : x
  2. Step 2: Convert to fraction form
    9,129.65/12,599.35 = 5,352.75/x
  3. Step 3: Cross multiply
    9,129.65x = 12,599.35 × 5,352.75
  4. Step 4: Simplify right side
    9,129.65x = 67,441,157.33
  5. Step 5: Solve for x
    x = 67,441,157.33/9,129.65
  6. Step 6: Final answer
    x = 7,387.05

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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.