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Finding the Fourth Proportional to 8,507.43, 11,740.55 and 4,970.57

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Solution

The fourth proportional to 8,507.43, 11,740.55 and 4,970.57 is: 6,859.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,507.43 : 11,740.55 = 4,970.57 : x
  2. Step 2: Convert to fraction form
    8,507.43/11,740.55 = 4,970.57/x
  3. Step 3: Cross multiply
    8,507.43x = 11,740.55 × 4,970.57
  4. Step 4: Simplify right side
    8,507.43x = 58,357,142.06
  5. Step 5: Solve for x
    x = 58,357,142.06/8,507.43
  6. Step 6: Final answer
    x = 6,859.55

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.