Home / 2,320.02-3,479.82-858.90

Finding the Fourth Proportional to 2,320.02, 3,479.82 and 858.90

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Solution

The fourth proportional to 2,320.02, 3,479.82 and 858.90 is: 1,288.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,320.02 : 3,479.82 = 858.90 : x
  2. Step 2: Convert to fraction form
    2,320.02/3,479.82 = 858.90/x
  3. Step 3: Cross multiply
    2,320.02x = 3,479.82 × 858.90
  4. Step 4: Simplify right side
    2,320.02x = 2,988,817.40
  5. Step 5: Solve for x
    x = 2,988,817.40/2,320.02
  6. Step 6: Final answer
    x = 1,288.27

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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.