Home / 9,005.79-12,428.03-5,229.11

Finding the Fourth Proportional to 9,005.79, 12,428.03 and 5,229.11

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Solution

The fourth proportional to 9,005.79, 12,428.03 and 5,229.11 is: 7,216.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,005.79 : 12,428.03 = 5,229.11 : x
  2. Step 2: Convert to fraction form
    9,005.79/12,428.03 = 5,229.11/x
  3. Step 3: Cross multiply
    9,005.79x = 12,428.03 × 5,229.11
  4. Step 4: Simplify right side
    9,005.79x = 64,987,555.74
  5. Step 5: Solve for x
    x = 64,987,555.74/9,005.79
  6. Step 6: Final answer
    x = 7,216.20

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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.