Home / 7,070.12-10,600.98-2,687.90

Finding the Fourth Proportional to 7,070.12, 10,600.98 and 2,687.90

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Solution

The fourth proportional to 7,070.12, 10,600.98 and 2,687.90 is: 4,030.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,070.12 : 10,600.98 = 2,687.90 : x
  2. Step 2: Convert to fraction form
    7,070.12/10,600.98 = 2,687.90/x
  3. Step 3: Cross multiply
    7,070.12x = 10,600.98 × 2,687.90
  4. Step 4: Simplify right side
    7,070.12x = 28,494,374.14
  5. Step 5: Solve for x
    x = 28,494,374.14/7,070.12
  6. Step 6: Final answer
    x = 4,030.25

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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.