Home / 2,068.12-3,102.98-1,247

Finding the Fourth Proportional to 2,068.12, 3,102.98 and 1,247

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Solution

The fourth proportional to 2,068.12, 3,102.98 and 1,247 is: 1,870.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,068.12 : 3,102.98 = 1,247 : x
  2. Step 2: Convert to fraction form
    2,068.12/3,102.98 = 1,247/x
  3. Step 3: Cross multiply
    2,068.12x = 3,102.98 × 1,247
  4. Step 4: Simplify right side
    2,068.12x = 3,869,416.06
  5. Step 5: Solve for x
    x = 3,869,416.06/2,068.12
  6. Step 6: Final answer
    x = 1,870.98

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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.