Home / 2,476.80-3,717-1,861.20

Finding the Fourth Proportional to 2,476.80, 3,717 and 1,861.20

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Solution

The fourth proportional to 2,476.80, 3,717 and 1,861.20 is: 2,793.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,476.80 : 3,717 = 1,861.20 : x
  2. Step 2: Convert to fraction form
    2,476.80/3,717 = 1,861.20/x
  3. Step 3: Cross multiply
    2,476.80x = 3,717 × 1,861.20
  4. Step 4: Simplify right side
    2,476.80x = 6,918,080.40
  5. Step 5: Solve for x
    x = 6,918,080.40/2,476.80
  6. Step 6: Final answer
    x = 2,793.15

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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.