Home / 2,191.16-3,301.36-1,983.20

Finding the Fourth Proportional to 2,191.16, 3,301.36 and 1,983.20

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Solution

The fourth proportional to 2,191.16, 3,301.36 and 1,983.20 is: 2,988.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.16 : 3,301.36 = 1,983.20 : x
  2. Step 2: Convert to fraction form
    2,191.16/3,301.36 = 1,983.20/x
  3. Step 3: Cross multiply
    2,191.16x = 3,301.36 × 1,983.20
  4. Step 4: Simplify right side
    2,191.16x = 6,547,257.15
  5. Step 5: Solve for x
    x = 6,547,257.15/2,191.16
  6. Step 6: Final answer
    x = 2,988.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.