Home / 8,622.47-12,922.88-3,686.31

Finding the Fourth Proportional to 8,622.47, 12,922.88 and 3,686.31

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Solution

The fourth proportional to 8,622.47, 12,922.88 and 3,686.31 is: 5,524.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,622.47 : 12,922.88 = 3,686.31 : x
  2. Step 2: Convert to fraction form
    8,622.47/12,922.88 = 3,686.31/x
  3. Step 3: Cross multiply
    8,622.47x = 12,922.88 × 3,686.31
  4. Step 4: Simplify right side
    8,622.47x = 47,637,702.53
  5. Step 5: Solve for x
    x = 47,637,702.53/8,622.47
  6. Step 6: Final answer
    x = 5,524.83

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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.