Home / 7,120.53-9,823.55-4,135.82

Finding the Fourth Proportional to 7,120.53, 9,823.55 and 4,135.82

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Solution

The fourth proportional to 7,120.53, 9,823.55 and 4,135.82 is: 5,705.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.53 : 9,823.55 = 4,135.82 : x
  2. Step 2: Convert to fraction form
    7,120.53/9,823.55 = 4,135.82/x
  3. Step 3: Cross multiply
    7,120.53x = 9,823.55 × 4,135.82
  4. Step 4: Simplify right side
    7,120.53x = 40,628,364.76
  5. Step 5: Solve for x
    x = 40,628,364.76/7,120.53
  6. Step 6: Final answer
    x = 5,705.81

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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.