Home / 7,328.40-10,992.44-1,781.77

Finding the Fourth Proportional to 7,328.40, 10,992.44 and 1,781.77

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Solution

The fourth proportional to 7,328.40, 10,992.44 and 1,781.77 is: 2,672.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,328.40 : 10,992.44 = 1,781.77 : x
  2. Step 2: Convert to fraction form
    7,328.40/10,992.44 = 1,781.77/x
  3. Step 3: Cross multiply
    7,328.40x = 10,992.44 × 1,781.77
  4. Step 4: Simplify right side
    7,328.40x = 19,585,970.11
  5. Step 5: Solve for x
    x = 19,585,970.11/7,328.40
  6. Step 6: Final answer
    x = 2,672.61

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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.