Home / 3,613.06-4,985.85-2,019.78

Finding the Fourth Proportional to 3,613.06, 4,985.85 and 2,019.78

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Solution

The fourth proportional to 3,613.06, 4,985.85 and 2,019.78 is: 2,787.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,613.06 : 4,985.85 = 2,019.78 : x
  2. Step 2: Convert to fraction form
    3,613.06/4,985.85 = 2,019.78/x
  3. Step 3: Cross multiply
    3,613.06x = 4,985.85 × 2,019.78
  4. Step 4: Simplify right side
    3,613.06x = 10,070,320.11
  5. Step 5: Solve for x
    x = 10,070,320.11/3,613.06
  6. Step 6: Final answer
    x = 2,787.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.