Home / 8,437.60-11,559.32-8,122.09

Finding the Fourth Proportional to 8,437.60, 11,559.32 and 8,122.09

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Solution

The fourth proportional to 8,437.60, 11,559.32 and 8,122.09 is: 11,127.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,437.60 : 11,559.32 = 8,122.09 : x
  2. Step 2: Convert to fraction form
    8,437.60/11,559.32 = 8,122.09/x
  3. Step 3: Cross multiply
    8,437.60x = 11,559.32 × 8,122.09
  4. Step 4: Simplify right side
    8,437.60x = 93,885,837.38
  5. Step 5: Solve for x
    x = 93,885,837.38/8,437.60
  6. Step 6: Final answer
    x = 11,127.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.