Home / 8,339.28-12,509.46-2,792.40

Finding the Fourth Proportional to 8,339.28, 12,509.46 and 2,792.40

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Solution

The fourth proportional to 8,339.28, 12,509.46 and 2,792.40 is: 4,188.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,339.28 : 12,509.46 = 2,792.40 : x
  2. Step 2: Convert to fraction form
    8,339.28/12,509.46 = 2,792.40/x
  3. Step 3: Cross multiply
    8,339.28x = 12,509.46 × 2,792.40
  4. Step 4: Simplify right side
    8,339.28x = 34,931,416.10
  5. Step 5: Solve for x
    x = 34,931,416.10/8,339.28
  6. Step 6: Final answer
    x = 4,188.78

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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.