Home / 8,425.18-12,637.77-2,878.57

Finding the Fourth Proportional to 8,425.18, 12,637.77 and 2,878.57

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Solution

The fourth proportional to 8,425.18, 12,637.77 and 2,878.57 is: 4,317.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,425.18 : 12,637.77 = 2,878.57 : x
  2. Step 2: Convert to fraction form
    8,425.18/12,637.77 = 2,878.57/x
  3. Step 3: Cross multiply
    8,425.18x = 12,637.77 × 2,878.57
  4. Step 4: Simplify right side
    8,425.18x = 36,378,710.59
  5. Step 5: Solve for x
    x = 36,378,710.59/8,425.18
  6. Step 6: Final answer
    x = 4,317.86

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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.