Home / 7,555.40-11,333.10-4,785.20

Finding the Fourth Proportional to 7,555.40, 11,333.10 and 4,785.20

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Solution

The fourth proportional to 7,555.40, 11,333.10 and 4,785.20 is: 7,177.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,555.40 : 11,333.10 = 4,785.20 : x
  2. Step 2: Convert to fraction form
    7,555.40/11,333.10 = 4,785.20/x
  3. Step 3: Cross multiply
    7,555.40x = 11,333.10 × 4,785.20
  4. Step 4: Simplify right side
    7,555.40x = 54,231,150.12
  5. Step 5: Solve for x
    x = 54,231,150.12/7,555.40
  6. Step 6: Final answer
    x = 7,177.80

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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.