Home / 8,345.36-11,521.50-5,205.80

Finding the Fourth Proportional to 8,345.36, 11,521.50 and 5,205.80

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Solution

The fourth proportional to 8,345.36, 11,521.50 and 5,205.80 is: 7,187.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,345.36 : 11,521.50 = 5,205.80 : x
  2. Step 2: Convert to fraction form
    8,345.36/11,521.50 = 5,205.80/x
  3. Step 3: Cross multiply
    8,345.36x = 11,521.50 × 5,205.80
  4. Step 4: Simplify right side
    8,345.36x = 59,978,624.70
  5. Step 5: Solve for x
    x = 59,978,624.70/8,345.36
  6. Step 6: Final answer
    x = 7,187.06

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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.