Home / 3,870.90-5,342.30-2,299.00

Finding the Fourth Proportional to 3,870.90, 5,342.30 and 2,299.00

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Solution

The fourth proportional to 3,870.90, 5,342.30 and 2,299.00 is: 3,172.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,870.90 : 5,342.30 = 2,299.00 : x
  2. Step 2: Convert to fraction form
    3,870.90/5,342.30 = 2,299.00/x
  3. Step 3: Cross multiply
    3,870.90x = 5,342.30 × 2,299.00
  4. Step 4: Simplify right side
    3,870.90x = 12,281,940.09
  5. Step 5: Solve for x
    x = 12,281,940.09/3,870.90
  6. Step 6: Final answer
    x = 3,172.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.