Home / 7,325.12-10,109.28-4,139

Finding the Fourth Proportional to 7,325.12, 10,109.28 and 4,139

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Solution

The fourth proportional to 7,325.12, 10,109.28 and 4,139 is: 5,712.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,325.12 : 10,109.28 = 4,139 : x
  2. Step 2: Convert to fraction form
    7,325.12/10,109.28 = 4,139/x
  3. Step 3: Cross multiply
    7,325.12x = 10,109.28 × 4,139
  4. Step 4: Simplify right side
    7,325.12x = 41,842,309.92
  5. Step 5: Solve for x
    x = 41,842,309.92/7,325.12
  6. Step 6: Final answer
    x = 5,712.17

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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.