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Finding the Fourth Proportional to 8,398.64, 11,576.78 and 7,051.58

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Solution

The fourth proportional to 8,398.64, 11,576.78 and 7,051.58 is: 9,719.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,398.64 : 11,576.78 = 7,051.58 : x
  2. Step 2: Convert to fraction form
    8,398.64/11,576.78 = 7,051.58/x
  3. Step 3: Cross multiply
    8,398.64x = 11,576.78 × 7,051.58
  4. Step 4: Simplify right side
    8,398.64x = 81,634,590.31
  5. Step 5: Solve for x
    x = 81,634,590.31/8,398.64
  6. Step 6: Final answer
    x = 9,719.98

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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.