Home / 2,600.34-3,901.86-1,987.98

Finding the Fourth Proportional to 2,600.34, 3,901.86 and 1,987.98

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Solution

The fourth proportional to 2,600.34, 3,901.86 and 1,987.98 is: 2,983.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,600.34 : 3,901.86 = 1,987.98 : x
  2. Step 2: Convert to fraction form
    2,600.34/3,901.86 = 1,987.98/x
  3. Step 3: Cross multiply
    2,600.34x = 3,901.86 × 1,987.98
  4. Step 4: Simplify right side
    2,600.34x = 7,756,790.19
  5. Step 5: Solve for x
    x = 7,756,790.19/2,600.34
  6. Step 6: Final answer
    x = 2,983.00

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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.