Home / 3,613.91-5,420.77-1,666.11

Finding the Fourth Proportional to 3,613.91, 5,420.77 and 1,666.11

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Solution

The fourth proportional to 3,613.91, 5,420.77 and 1,666.11 is: 2,499.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,613.91 : 5,420.77 = 1,666.11 : x
  2. Step 2: Convert to fraction form
    3,613.91/5,420.77 = 1,666.11/x
  3. Step 3: Cross multiply
    3,613.91x = 5,420.77 × 1,666.11
  4. Step 4: Simplify right side
    3,613.91x = 9,031,599.10
  5. Step 5: Solve for x
    x = 9,031,599.10/3,613.91
  6. Step 6: Final answer
    x = 2,499.12

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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.