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Finding the Fourth Proportional to 8,612.84, 12,924.93 and 4,719.98

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Solution

The fourth proportional to 8,612.84, 12,924.93 and 4,719.98 is: 7,083.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,612.84 : 12,924.93 = 4,719.98 : x
  2. Step 2: Convert to fraction form
    8,612.84/12,924.93 = 4,719.98/x
  3. Step 3: Cross multiply
    8,612.84x = 12,924.93 × 4,719.98
  4. Step 4: Simplify right side
    8,612.84x = 61,005,411.10
  5. Step 5: Solve for x
    x = 61,005,411.10/8,612.84
  6. Step 6: Final answer
    x = 7,083.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.