Home / 7,947.20-11,916.96-4,661.36

Finding the Fourth Proportional to 7,947.20, 11,916.96 and 4,661.36

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Solution

The fourth proportional to 7,947.20, 11,916.96 and 4,661.36 is: 6,989.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,947.20 : 11,916.96 = 4,661.36 : x
  2. Step 2: Convert to fraction form
    7,947.20/11,916.96 = 4,661.36/x
  3. Step 3: Cross multiply
    7,947.20x = 11,916.96 × 4,661.36
  4. Step 4: Simplify right side
    7,947.20x = 55,549,240.67
  5. Step 5: Solve for x
    x = 55,549,240.67/7,947.20
  6. Step 6: Final answer
    x = 6,989.79

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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.