Home / 9,419.87-12,999.51-5,440.89

Finding the Fourth Proportional to 9,419.87, 12,999.51 and 5,440.89

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Solution

The fourth proportional to 9,419.87, 12,999.51 and 5,440.89 is: 7,508.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,419.87 : 12,999.51 = 5,440.89 : x
  2. Step 2: Convert to fraction form
    9,419.87/12,999.51 = 5,440.89/x
  3. Step 3: Cross multiply
    9,419.87x = 12,999.51 × 5,440.89
  4. Step 4: Simplify right side
    9,419.87x = 70,728,952.71
  5. Step 5: Solve for x
    x = 70,728,952.71/9,419.87
  6. Step 6: Final answer
    x = 7,508.48

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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.