Home / 9,135.67-12,607.23-6,342.79

Finding the Fourth Proportional to 9,135.67, 12,607.23 and 6,342.79

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Solution

The fourth proportional to 9,135.67, 12,607.23 and 6,342.79 is: 8,753.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,135.67 : 12,607.23 = 6,342.79 : x
  2. Step 2: Convert to fraction form
    9,135.67/12,607.23 = 6,342.79/x
  3. Step 3: Cross multiply
    9,135.67x = 12,607.23 × 6,342.79
  4. Step 4: Simplify right side
    9,135.67x = 79,965,012.37
  5. Step 5: Solve for x
    x = 79,965,012.37/9,135.67
  6. Step 6: Final answer
    x = 8,753.05

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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.