Home / 8,780.21-12,116.70-4,801.70

Finding the Fourth Proportional to 8,780.21, 12,116.70 and 4,801.70

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Solution

The fourth proportional to 8,780.21, 12,116.70 and 4,801.70 is: 6,626.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,780.21 : 12,116.70 = 4,801.70 : x
  2. Step 2: Convert to fraction form
    8,780.21/12,116.70 = 4,801.70/x
  3. Step 3: Cross multiply
    8,780.21x = 12,116.70 × 4,801.70
  4. Step 4: Simplify right side
    8,780.21x = 58,180,685.80
  5. Step 5: Solve for x
    x = 58,180,685.80/8,780.21
  6. Step 6: Final answer
    x = 6,626.34

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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.