Home / 5,125.92-7,688.11-1,427.77

Finding the Fourth Proportional to 5,125.92, 7,688.11 and 1,427.77

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Solution

The fourth proportional to 5,125.92, 7,688.11 and 1,427.77 is: 2,141.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.92 : 7,688.11 = 1,427.77 : x
  2. Step 2: Convert to fraction form
    5,125.92/7,688.11 = 1,427.77/x
  3. Step 3: Cross multiply
    5,125.92x = 7,688.11 × 1,427.77
  4. Step 4: Simplify right side
    5,125.92x = 10,976,852.81
  5. Step 5: Solve for x
    x = 10,976,852.81/5,125.92
  6. Step 6: Final answer
    x = 2,141.44

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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.