Home / 8,638.45-12,957.74-3,703.93

Finding the Fourth Proportional to 8,638.45, 12,957.74 and 3,703.93

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Solution

The fourth proportional to 8,638.45, 12,957.74 and 3,703.93 is: 5,555.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,638.45 : 12,957.74 = 3,703.93 : x
  2. Step 2: Convert to fraction form
    8,638.45/12,957.74 = 3,703.93/x
  3. Step 3: Cross multiply
    8,638.45x = 12,957.74 × 3,703.93
  4. Step 4: Simplify right side
    8,638.45x = 47,994,543.40
  5. Step 5: Solve for x
    x = 47,994,543.40/8,638.45
  6. Step 6: Final answer
    x = 5,555.92

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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.