Home / 7,172.80-9,895.52-4,518.72

Finding the Fourth Proportional to 7,172.80, 9,895.52 and 4,518.72

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Solution

The fourth proportional to 7,172.80, 9,895.52 and 4,518.72 is: 6,233.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,172.80 : 9,895.52 = 4,518.72 : x
  2. Step 2: Convert to fraction form
    7,172.80/9,895.52 = 4,518.72/x
  3. Step 3: Cross multiply
    7,172.80x = 9,895.52 × 4,518.72
  4. Step 4: Simplify right side
    7,172.80x = 44,715,084.13
  5. Step 5: Solve for x
    x = 44,715,084.13/7,172.80
  6. Step 6: Final answer
    x = 6,233.98

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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.