Home / 8,780.18-13,114.22-7,945.98

Finding the Fourth Proportional to 8,780.18, 13,114.22 and 7,945.98

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Solution

The fourth proportional to 8,780.18, 13,114.22 and 7,945.98 is: 11,868.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,780.18 : 13,114.22 = 7,945.98 : x
  2. Step 2: Convert to fraction form
    8,780.18/13,114.22 = 7,945.98/x
  3. Step 3: Cross multiply
    8,780.18x = 13,114.22 × 7,945.98
  4. Step 4: Simplify right side
    8,780.18x = 104,205,329.84
  5. Step 5: Solve for x
    x = 104,205,329.84/8,780.18
  6. Step 6: Final answer
    x = 11,868.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.