Home / 2,124.30-3,186.45-1,346.70

Finding the Fourth Proportional to 2,124.30, 3,186.45 and 1,346.70

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Solution

The fourth proportional to 2,124.30, 3,186.45 and 1,346.70 is: 2,020.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,124.30 : 3,186.45 = 1,346.70 : x
  2. Step 2: Convert to fraction form
    2,124.30/3,186.45 = 1,346.70/x
  3. Step 3: Cross multiply
    2,124.30x = 3,186.45 × 1,346.70
  4. Step 4: Simplify right side
    2,124.30x = 4,291,192.22
  5. Step 5: Solve for x
    x = 4,291,192.22/2,124.30
  6. Step 6: Final answer
    x = 2,020.05

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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.