Home / 9,009.79-12,431.48-6,465.58

Finding the Fourth Proportional to 9,009.79, 12,431.48 and 6,465.58

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Solution

The fourth proportional to 9,009.79, 12,431.48 and 6,465.58 is: 8,921.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,009.79 : 12,431.48 = 6,465.58 : x
  2. Step 2: Convert to fraction form
    9,009.79/12,431.48 = 6,465.58/x
  3. Step 3: Cross multiply
    9,009.79x = 12,431.48 × 6,465.58
  4. Step 4: Simplify right side
    9,009.79x = 80,376,665.05
  5. Step 5: Solve for x
    x = 80,376,665.05/9,009.79
  6. Step 6: Final answer
    x = 8,921.04

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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.