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Finding the Fourth Proportional to 8,897.47, 12,278.44 and 4,918.51

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Solution

The fourth proportional to 8,897.47, 12,278.44 and 4,918.51 is: 6,787.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,897.47 : 12,278.44 = 4,918.51 : x
  2. Step 2: Convert to fraction form
    8,897.47/12,278.44 = 4,918.51/x
  3. Step 3: Cross multiply
    8,897.47x = 12,278.44 × 4,918.51
  4. Step 4: Simplify right side
    8,897.47x = 60,391,629.92
  5. Step 5: Solve for x
    x = 60,391,629.92/8,897.47
  6. Step 6: Final answer
    x = 6,787.51

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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.