Home / 8,320.62-11,480.38-5,340.53

Finding the Fourth Proportional to 8,320.62, 11,480.38 and 5,340.53

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Solution

The fourth proportional to 8,320.62, 11,480.38 and 5,340.53 is: 7,368.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.62 : 11,480.38 = 5,340.53 : x
  2. Step 2: Convert to fraction form
    8,320.62/11,480.38 = 5,340.53/x
  3. Step 3: Cross multiply
    8,320.62x = 11,480.38 × 5,340.53
  4. Step 4: Simplify right side
    8,320.62x = 61,311,359.19
  5. Step 5: Solve for x
    x = 61,311,359.19/8,320.62
  6. Step 6: Final answer
    x = 7,368.60

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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.