Home / 8,913.20-12,303.28-5,137.87

Finding the Fourth Proportional to 8,913.20, 12,303.28 and 5,137.87

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Solution

The fourth proportional to 8,913.20, 12,303.28 and 5,137.87 is: 7,092.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,913.20 : 12,303.28 = 5,137.87 : x
  2. Step 2: Convert to fraction form
    8,913.20/12,303.28 = 5,137.87/x
  3. Step 3: Cross multiply
    8,913.20x = 12,303.28 × 5,137.87
  4. Step 4: Simplify right side
    8,913.20x = 63,212,609.61
  5. Step 5: Solve for x
    x = 63,212,609.61/8,913.20
  6. Step 6: Final answer
    x = 7,092.03

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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.