Home / 8,947.44-12,347.64-5,220.72

Finding the Fourth Proportional to 8,947.44, 12,347.64 and 5,220.72

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Solution

The fourth proportional to 8,947.44, 12,347.64 and 5,220.72 is: 7,204.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,947.44 : 12,347.64 = 5,220.72 : x
  2. Step 2: Convert to fraction form
    8,947.44/12,347.64 = 5,220.72/x
  3. Step 3: Cross multiply
    8,947.44x = 12,347.64 × 5,220.72
  4. Step 4: Simplify right side
    8,947.44x = 64,463,571.10
  5. Step 5: Solve for x
    x = 64,463,571.10/8,947.44
  6. Step 6: Final answer
    x = 7,204.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.