Home / 8,783.40-12,113.82-6,393.36

Finding the Fourth Proportional to 8,783.40, 12,113.82 and 6,393.36

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Solution

The fourth proportional to 8,783.40, 12,113.82 and 6,393.36 is: 8,817.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,783.40 : 12,113.82 = 6,393.36 : x
  2. Step 2: Convert to fraction form
    8,783.40/12,113.82 = 6,393.36/x
  3. Step 3: Cross multiply
    8,783.40x = 12,113.82 × 6,393.36
  4. Step 4: Simplify right side
    8,783.40x = 77,448,012.24
  5. Step 5: Solve for x
    x = 77,448,012.24/8,783.40
  6. Step 6: Final answer
    x = 8,817.54

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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.