Home / 8,830.12-12,178.46-7,765.60

Finding the Fourth Proportional to 8,830.12, 12,178.46 and 7,765.60

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Solution

The fourth proportional to 8,830.12, 12,178.46 and 7,765.60 is: 10,710.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,830.12 : 12,178.46 = 7,765.60 : x
  2. Step 2: Convert to fraction form
    8,830.12/12,178.46 = 7,765.60/x
  3. Step 3: Cross multiply
    8,830.12x = 12,178.46 × 7,765.60
  4. Step 4: Simplify right side
    8,830.12x = 94,573,048.98
  5. Step 5: Solve for x
    x = 94,573,048.98/8,830.12
  6. Step 6: Final answer
    x = 10,710.28

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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.