Home / 8,389.32-12,576.78-4,688.52

Finding the Fourth Proportional to 8,389.32, 12,576.78 and 4,688.52

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Solution

The fourth proportional to 8,389.32, 12,576.78 and 4,688.52 is: 7,028.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,389.32 : 12,576.78 = 4,688.52 : x
  2. Step 2: Convert to fraction form
    8,389.32/12,576.78 = 4,688.52/x
  3. Step 3: Cross multiply
    8,389.32x = 12,576.78 × 4,688.52
  4. Step 4: Simplify right side
    8,389.32x = 58,966,484.57
  5. Step 5: Solve for x
    x = 58,966,484.57/8,389.32
  6. Step 6: Final answer
    x = 7,028.76

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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.