Home / 3,746.39-5,618.13-1,405.12

Finding the Fourth Proportional to 3,746.39, 5,618.13 and 1,405.12

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Solution

The fourth proportional to 3,746.39, 5,618.13 and 1,405.12 is: 2,107.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,746.39 : 5,618.13 = 1,405.12 : x
  2. Step 2: Convert to fraction form
    3,746.39/5,618.13 = 1,405.12/x
  3. Step 3: Cross multiply
    3,746.39x = 5,618.13 × 1,405.12
  4. Step 4: Simplify right side
    3,746.39x = 7,894,139.80
  5. Step 5: Solve for x
    x = 7,894,139.80/3,746.39
  6. Step 6: Final answer
    x = 2,107.13

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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.