Home / 8,509.60-12,761.55-3,578.32

Finding the Fourth Proportional to 8,509.60, 12,761.55 and 3,578.32

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Solution

The fourth proportional to 8,509.60, 12,761.55 and 3,578.32 is: 5,366.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,509.60 : 12,761.55 = 3,578.32 : x
  2. Step 2: Convert to fraction form
    8,509.60/12,761.55 = 3,578.32/x
  3. Step 3: Cross multiply
    8,509.60x = 12,761.55 × 3,578.32
  4. Step 4: Simplify right side
    8,509.60x = 45,664,909.60
  5. Step 5: Solve for x
    x = 45,664,909.60/8,509.60
  6. Step 6: Final answer
    x = 5,366.28

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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.