Home / 5,409.86-8,115.63-1,947.92

Finding the Fourth Proportional to 5,409.86, 8,115.63 and 1,947.92

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Solution

The fourth proportional to 5,409.86, 8,115.63 and 1,947.92 is: 2,922.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,409.86 : 8,115.63 = 1,947.92 : x
  2. Step 2: Convert to fraction form
    5,409.86/8,115.63 = 1,947.92/x
  3. Step 3: Cross multiply
    5,409.86x = 8,115.63 × 1,947.92
  4. Step 4: Simplify right side
    5,409.86x = 15,808,597.99
  5. Step 5: Solve for x
    x = 15,808,597.99/5,409.86
  6. Step 6: Final answer
    x = 2,922.18

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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.