Home / 9,327.74-12,872.86-5,135.99

Finding the Fourth Proportional to 9,327.74, 12,872.86 and 5,135.99

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Solution

The fourth proportional to 9,327.74, 12,872.86 and 5,135.99 is: 7,087.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,327.74 : 12,872.86 = 5,135.99 : x
  2. Step 2: Convert to fraction form
    9,327.74/12,872.86 = 5,135.99/x
  3. Step 3: Cross multiply
    9,327.74x = 12,872.86 × 5,135.99
  4. Step 4: Simplify right side
    9,327.74x = 66,114,803.03
  5. Step 5: Solve for x
    x = 66,114,803.03/9,327.74
  6. Step 6: Final answer
    x = 7,087.98

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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.