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Finding the Fourth Proportional to 8,748.45, 12,077.48 and 7,028.31

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Solution

The fourth proportional to 8,748.45, 12,077.48 and 7,028.31 is: 9,702.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,748.45 : 12,077.48 = 7,028.31 : x
  2. Step 2: Convert to fraction form
    8,748.45/12,077.48 = 7,028.31/x
  3. Step 3: Cross multiply
    8,748.45x = 12,077.48 × 7,028.31
  4. Step 4: Simplify right side
    8,748.45x = 84,884,238.32
  5. Step 5: Solve for x
    x = 84,884,238.32/8,748.45
  6. Step 6: Final answer
    x = 9,702.77

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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.