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Finding the Fourth Proportional to 7,911.04, 10,917.30 and 4,374.31

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Solution

The fourth proportional to 7,911.04, 10,917.30 and 4,374.31 is: 6,036.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,911.04 : 10,917.30 = 4,374.31 : x
  2. Step 2: Convert to fraction form
    7,911.04/10,917.30 = 4,374.31/x
  3. Step 3: Cross multiply
    7,911.04x = 10,917.30 × 4,374.31
  4. Step 4: Simplify right side
    7,911.04x = 47,755,654.56
  5. Step 5: Solve for x
    x = 47,755,654.56/7,911.04
  6. Step 6: Final answer
    x = 6,036.58

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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.