Home / 2,580.21-3,870.20-632.31

Finding the Fourth Proportional to 2,580.21, 3,870.20 and 632.31

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Solution

The fourth proportional to 2,580.21, 3,870.20 and 632.31 is: 948.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,580.21 : 3,870.20 = 632.31 : x
  2. Step 2: Convert to fraction form
    2,580.21/3,870.20 = 632.31/x
  3. Step 3: Cross multiply
    2,580.21x = 3,870.20 × 632.31
  4. Step 4: Simplify right side
    2,580.21x = 2,447,163.00
  5. Step 5: Solve for x
    x = 2,447,163.00/2,580.21
  6. Step 6: Final answer
    x = 948.44

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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.