Home / 5,174.20-7,139.88-2,935.72

Finding the Fourth Proportional to 5,174.20, 7,139.88 and 2,935.72

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Solution

The fourth proportional to 5,174.20, 7,139.88 and 2,935.72 is: 4,051.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,174.20 : 7,139.88 = 2,935.72 : x
  2. Step 2: Convert to fraction form
    5,174.20/7,139.88 = 2,935.72/x
  3. Step 3: Cross multiply
    5,174.20x = 7,139.88 × 2,935.72
  4. Step 4: Simplify right side
    5,174.20x = 20,960,688.51
  5. Step 5: Solve for x
    x = 20,960,688.51/5,174.20
  6. Step 6: Final answer
    x = 4,051.00

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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.