Home / 4,780.45-7,170.77-1,818.10

Finding the Fourth Proportional to 4,780.45, 7,170.77 and 1,818.10

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Solution

The fourth proportional to 4,780.45, 7,170.77 and 1,818.10 is: 2,727.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,780.45 : 7,170.77 = 1,818.10 : x
  2. Step 2: Convert to fraction form
    4,780.45/7,170.77 = 1,818.10/x
  3. Step 3: Cross multiply
    4,780.45x = 7,170.77 × 1,818.10
  4. Step 4: Simplify right side
    4,780.45x = 13,037,176.94
  5. Step 5: Solve for x
    x = 13,037,176.94/4,780.45
  6. Step 6: Final answer
    x = 2,727.19

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1.5x scale

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.