Home / 4,785.90-7,177.43-1,665.78

Finding the Fourth Proportional to 4,785.90, 7,177.43 and 1,665.78

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Solution

The fourth proportional to 4,785.90, 7,177.43 and 1,665.78 is: 2,498.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,785.90 : 7,177.43 = 1,665.78 : x
  2. Step 2: Convert to fraction form
    4,785.90/7,177.43 = 1,665.78/x
  3. Step 3: Cross multiply
    4,785.90x = 7,177.43 × 1,665.78
  4. Step 4: Simplify right side
    4,785.90x = 11,956,011.02
  5. Step 5: Solve for x
    x = 11,956,011.02/4,785.90
  6. Step 6: Final answer
    x = 2,498.17

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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.