Home / 7,192.85-9,928.91-5,621.45

Finding the Fourth Proportional to 7,192.85, 9,928.91 and 5,621.45

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Solution

The fourth proportional to 7,192.85, 9,928.91 and 5,621.45 is: 7,759.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,192.85 : 9,928.91 = 5,621.45 : x
  2. Step 2: Convert to fraction form
    7,192.85/9,928.91 = 5,621.45/x
  3. Step 3: Cross multiply
    7,192.85x = 9,928.91 × 5,621.45
  4. Step 4: Simplify right side
    7,192.85x = 55,814,835.53
  5. Step 5: Solve for x
    x = 55,814,835.53/7,192.85
  6. Step 6: Final answer
    x = 7,759.77

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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.