Home / 2,320.37-3,479.95-858.73

Finding the Fourth Proportional to 2,320.37, 3,479.95 and 858.73

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Solution

The fourth proportional to 2,320.37, 3,479.95 and 858.73 is: 1,287.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,320.37 : 3,479.95 = 858.73 : x
  2. Step 2: Convert to fraction form
    2,320.37/3,479.95 = 858.73/x
  3. Step 3: Cross multiply
    2,320.37x = 3,479.95 × 858.73
  4. Step 4: Simplify right side
    2,320.37x = 2,988,317.92
  5. Step 5: Solve for x
    x = 2,988,317.92/2,320.37
  6. Step 6: Final answer
    x = 1,287.86

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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.