Home / 7,929.36-11,900.03-5,424.57

Finding the Fourth Proportional to 7,929.36, 11,900.03 and 5,424.57

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Solution

The fourth proportional to 7,929.36, 11,900.03 and 5,424.57 is: 8,140.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,929.36 : 11,900.03 = 5,424.57 : x
  2. Step 2: Convert to fraction form
    7,929.36/11,900.03 = 5,424.57/x
  3. Step 3: Cross multiply
    7,929.36x = 11,900.03 × 5,424.57
  4. Step 4: Simplify right side
    7,929.36x = 64,552,518.61
  5. Step 5: Solve for x
    x = 64,552,518.61/7,929.36
  6. Step 6: Final answer
    x = 8,140.95

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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.