Home / 7,120.08-10,675.96-4,782.80

Finding the Fourth Proportional to 7,120.08, 10,675.96 and 4,782.80

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Solution

The fourth proportional to 7,120.08, 10,675.96 and 4,782.80 is: 7,171.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.08 : 10,675.96 = 4,782.80 : x
  2. Step 2: Convert to fraction form
    7,120.08/10,675.96 = 4,782.80/x
  3. Step 3: Cross multiply
    7,120.08x = 10,675.96 × 4,782.80
  4. Step 4: Simplify right side
    7,120.08x = 51,060,981.49
  5. Step 5: Solve for x
    x = 51,060,981.49/7,120.08
  6. Step 6: Final answer
    x = 7,171.41

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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.