Home / 8,977.30-12,388.34-4,998.78

Finding the Fourth Proportional to 8,977.30, 12,388.34 and 4,998.78

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Solution

The fourth proportional to 8,977.30, 12,388.34 and 4,998.78 is: 6,898.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,977.30 : 12,388.34 = 4,998.78 : x
  2. Step 2: Convert to fraction form
    8,977.30/12,388.34 = 4,998.78/x
  3. Step 3: Cross multiply
    8,977.30x = 12,388.34 × 4,998.78
  4. Step 4: Simplify right side
    8,977.30x = 61,926,598.72
  5. Step 5: Solve for x
    x = 61,926,598.72/8,977.30
  6. Step 6: Final answer
    x = 6,898.13

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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.