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Finding the Fourth Proportional to 8,390.52, 12,576.15 and 4,694.49

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Solution

The fourth proportional to 8,390.52, 12,576.15 and 4,694.49 is: 7,036.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,390.52 : 12,576.15 = 4,694.49 : x
  2. Step 2: Convert to fraction form
    8,390.52/12,576.15 = 4,694.49/x
  3. Step 3: Cross multiply
    8,390.52x = 12,576.15 × 4,694.49
  4. Step 4: Simplify right side
    8,390.52x = 59,038,610.41
  5. Step 5: Solve for x
    x = 59,038,610.41/8,390.52
  6. Step 6: Final answer
    x = 7,036.35

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1.5x scale

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.