Home / 2,900.80-4,002.45-1,958.35

Finding the Fourth Proportional to 2,900.80, 4,002.45 and 1,958.35

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Solution

The fourth proportional to 2,900.80, 4,002.45 and 1,958.35 is: 2,702.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,900.80 : 4,002.45 = 1,958.35 : x
  2. Step 2: Convert to fraction form
    2,900.80/4,002.45 = 1,958.35/x
  3. Step 3: Cross multiply
    2,900.80x = 4,002.45 × 1,958.35
  4. Step 4: Simplify right side
    2,900.80x = 7,838,197.96
  5. Step 5: Solve for x
    x = 7,838,197.96/2,900.80
  6. Step 6: Final answer
    x = 2,702.08

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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.