Home / 4,785.51-7,178.89-1,665.74

Finding the Fourth Proportional to 4,785.51, 7,178.89 and 1,665.74

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Solution

The fourth proportional to 4,785.51, 7,178.89 and 1,665.74 is: 2,498.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,785.51 : 7,178.89 = 1,665.74 : x
  2. Step 2: Convert to fraction form
    4,785.51/7,178.89 = 1,665.74/x
  3. Step 3: Cross multiply
    4,785.51x = 7,178.89 × 1,665.74
  4. Step 4: Simplify right side
    4,785.51x = 11,958,155.90
  5. Step 5: Solve for x
    x = 11,958,155.90/4,785.51
  6. Step 6: Final answer
    x = 2,498.83

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Double scale
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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.