Home / 2,174.28-3,000.64-1,242.76

Finding the Fourth Proportional to 2,174.28, 3,000.64 and 1,242.76

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Solution

The fourth proportional to 2,174.28, 3,000.64 and 1,242.76 is: 1,715.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,174.28 : 3,000.64 = 1,242.76 : x
  2. Step 2: Convert to fraction form
    2,174.28/3,000.64 = 1,242.76/x
  3. Step 3: Cross multiply
    2,174.28x = 3,000.64 × 1,242.76
  4. Step 4: Simplify right side
    2,174.28x = 3,729,075.37
  5. Step 5: Solve for x
    x = 3,729,075.37/2,174.28
  6. Step 6: Final answer
    x = 1,715.09

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1.5x scale

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.