Home / 7,456.15-11,189.40-5,611.15

Finding the Fourth Proportional to 7,456.15, 11,189.40 and 5,611.15

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Solution

The fourth proportional to 7,456.15, 11,189.40 and 5,611.15 is: 8,420.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,456.15 : 11,189.40 = 5,611.15 : x
  2. Step 2: Convert to fraction form
    7,456.15/11,189.40 = 5,611.15/x
  3. Step 3: Cross multiply
    7,456.15x = 11,189.40 × 5,611.15
  4. Step 4: Simplify right side
    7,456.15x = 62,785,401.81
  5. Step 5: Solve for x
    x = 62,785,401.81/7,456.15
  6. Step 6: Final answer
    x = 8,420.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.