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Finding the Fourth Proportional to 8,780.76, 12,117.17 and 4,801.77

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Solution

The fourth proportional to 8,780.76, 12,117.17 and 4,801.77 is: 6,626.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,780.76 : 12,117.17 = 4,801.77 : x
  2. Step 2: Convert to fraction form
    8,780.76/12,117.17 = 4,801.77/x
  3. Step 3: Cross multiply
    8,780.76x = 12,117.17 × 4,801.77
  4. Step 4: Simplify right side
    8,780.76x = 58,183,875.40
  5. Step 5: Solve for x
    x = 58,183,875.40/8,780.76
  6. Step 6: Final answer
    x = 6,626.29

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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.