Home / 2,073.16-3,109.80-612.40

Finding the Fourth Proportional to 2,073.16, 3,109.80 and 612.40

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Solution

The fourth proportional to 2,073.16, 3,109.80 and 612.40 is: 918.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,073.16 : 3,109.80 = 612.40 : x
  2. Step 2: Convert to fraction form
    2,073.16/3,109.80 = 612.40/x
  3. Step 3: Cross multiply
    2,073.16x = 3,109.80 × 612.40
  4. Step 4: Simplify right side
    2,073.16x = 1,904,441.52
  5. Step 5: Solve for x
    x = 1,904,441.52/2,073.16
  6. Step 6: Final answer
    x = 918.62

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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.