Home / 8,325.09-11,428.47-7,144.11

Finding the Fourth Proportional to 8,325.09, 11,428.47 and 7,144.11

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Solution

The fourth proportional to 8,325.09, 11,428.47 and 7,144.11 is: 9,807.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,325.09 : 11,428.47 = 7,144.11 : x
  2. Step 2: Convert to fraction form
    8,325.09/11,428.47 = 7,144.11/x
  3. Step 3: Cross multiply
    8,325.09x = 11,428.47 × 7,144.11
  4. Step 4: Simplify right side
    8,325.09x = 81,646,246.81
  5. Step 5: Solve for x
    x = 81,646,246.81/8,325.09
  6. Step 6: Final answer
    x = 9,807.25

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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.