Home / 3,174.85-4,384.98-2,990.32

Finding the Fourth Proportional to 3,174.85, 4,384.98 and 2,990.32

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Solution

The fourth proportional to 3,174.85, 4,384.98 and 2,990.32 is: 4,130.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,174.85 : 4,384.98 = 2,990.32 : x
  2. Step 2: Convert to fraction form
    3,174.85/4,384.98 = 2,990.32/x
  3. Step 3: Cross multiply
    3,174.85x = 4,384.98 × 2,990.32
  4. Step 4: Simplify right side
    3,174.85x = 13,112,500.37
  5. Step 5: Solve for x
    x = 13,112,500.37/3,174.85
  6. Step 6: Final answer
    x = 4,130.12

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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.