Home / 8,780.40-12,096.32-6,122.96

Finding the Fourth Proportional to 8,780.40, 12,096.32 and 6,122.96

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Solution

The fourth proportional to 8,780.40, 12,096.32 and 6,122.96 is: 8,435.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,780.40 : 12,096.32 = 6,122.96 : x
  2. Step 2: Convert to fraction form
    8,780.40/12,096.32 = 6,122.96/x
  3. Step 3: Cross multiply
    8,780.40x = 12,096.32 × 6,122.96
  4. Step 4: Simplify right side
    8,780.40x = 74,065,283.51
  5. Step 5: Solve for x
    x = 74,065,283.51/8,780.40
  6. Step 6: Final answer
    x = 8,435.30

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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.