Home / 9,129.48-12,609.58-6,488.34

Finding the Fourth Proportional to 9,129.48, 12,609.58 and 6,488.34

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Solution

The fourth proportional to 9,129.48, 12,609.58 and 6,488.34 is: 8,961.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,129.48 : 12,609.58 = 6,488.34 : x
  2. Step 2: Convert to fraction form
    9,129.48/12,609.58 = 6,488.34/x
  3. Step 3: Cross multiply
    9,129.48x = 12,609.58 × 6,488.34
  4. Step 4: Simplify right side
    9,129.48x = 81,815,242.30
  5. Step 5: Solve for x
    x = 81,815,242.30/9,129.48
  6. Step 6: Final answer
    x = 8,961.65

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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.