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Finding the Fourth Proportional to 8,557.76, 11,809.29 and 4,780.17

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Solution

The fourth proportional to 8,557.76, 11,809.29 and 4,780.17 is: 6,596.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,557.76 : 11,809.29 = 4,780.17 : x
  2. Step 2: Convert to fraction form
    8,557.76/11,809.29 = 4,780.17/x
  3. Step 3: Cross multiply
    8,557.76x = 11,809.29 × 4,780.17
  4. Step 4: Simplify right side
    8,557.76x = 56,450,440.14
  5. Step 5: Solve for x
    x = 56,450,440.14/8,557.76
  6. Step 6: Final answer
    x = 6,596.40

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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.