Home / 7,638.10-11,447.58-4,127.98

Finding the Fourth Proportional to 7,638.10, 11,447.58 and 4,127.98

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Solution

The fourth proportional to 7,638.10, 11,447.58 and 4,127.98 is: 6,186.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,638.10 : 11,447.58 = 4,127.98 : x
  2. Step 2: Convert to fraction form
    7,638.10/11,447.58 = 4,127.98/x
  3. Step 3: Cross multiply
    7,638.10x = 11,447.58 × 4,127.98
  4. Step 4: Simplify right side
    7,638.10x = 47,255,381.29
  5. Step 5: Solve for x
    x = 47,255,381.29/7,638.10
  6. Step 6: Final answer
    x = 6,186.80

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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.