Home / 2,130.24-3,195.67-669.50

Finding the Fourth Proportional to 2,130.24, 3,195.67 and 669.50

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Solution

The fourth proportional to 2,130.24, 3,195.67 and 669.50 is: 1,004.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.24 : 3,195.67 = 669.50 : x
  2. Step 2: Convert to fraction form
    2,130.24/3,195.67 = 669.50/x
  3. Step 3: Cross multiply
    2,130.24x = 3,195.67 × 669.50
  4. Step 4: Simplify right side
    2,130.24x = 2,139,501.07
  5. Step 5: Solve for x
    x = 2,139,501.07/2,130.24
  6. Step 6: Final answer
    x = 1,004.35

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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.