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Finding the Fourth Proportional to 8,820.51, 13,278.89 and 8,045.51

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Solution

The fourth proportional to 8,820.51, 13,278.89 and 8,045.51 is: 12,112.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,820.51 : 13,278.89 = 8,045.51 : x
  2. Step 2: Convert to fraction form
    8,820.51/13,278.89 = 8,045.51/x
  3. Step 3: Cross multiply
    8,820.51x = 13,278.89 × 8,045.51
  4. Step 4: Simplify right side
    8,820.51x = 106,835,335.66
  5. Step 5: Solve for x
    x = 106,835,335.66/8,820.51
  6. Step 6: Final answer
    x = 12,112.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.