Home / 8,782.05-12,120.39-5,006.58

Finding the Fourth Proportional to 8,782.05, 12,120.39 and 5,006.58

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Solution

The fourth proportional to 8,782.05, 12,120.39 and 5,006.58 is: 6,909.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,782.05 : 12,120.39 = 5,006.58 : x
  2. Step 2: Convert to fraction form
    8,782.05/12,120.39 = 5,006.58/x
  3. Step 3: Cross multiply
    8,782.05x = 12,120.39 × 5,006.58
  4. Step 4: Simplify right side
    8,782.05x = 60,681,702.17
  5. Step 5: Solve for x
    x = 60,681,702.17/8,782.05
  6. Step 6: Final answer
    x = 6,909.74

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1.5x scale

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.