Home / 8,516.18-11,752.40-4,978.70

Finding the Fourth Proportional to 8,516.18, 11,752.40 and 4,978.70

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Solution

The fourth proportional to 8,516.18, 11,752.40 and 4,978.70 is: 6,870.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,516.18 : 11,752.40 = 4,978.70 : x
  2. Step 2: Convert to fraction form
    8,516.18/11,752.40 = 4,978.70/x
  3. Step 3: Cross multiply
    8,516.18x = 11,752.40 × 4,978.70
  4. Step 4: Simplify right side
    8,516.18x = 58,511,673.88
  5. Step 5: Solve for x
    x = 58,511,673.88/8,516.18
  6. Step 6: Final answer
    x = 6,870.65

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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.