Home / 2,082.90-2,874.63-1,186.86

Finding the Fourth Proportional to 2,082.90, 2,874.63 and 1,186.86

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Solution

The fourth proportional to 2,082.90, 2,874.63 and 1,186.86 is: 1,638.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,082.90 : 2,874.63 = 1,186.86 : x
  2. Step 2: Convert to fraction form
    2,082.90/2,874.63 = 1,186.86/x
  3. Step 3: Cross multiply
    2,082.90x = 2,874.63 × 1,186.86
  4. Step 4: Simplify right side
    2,082.90x = 3,411,783.36
  5. Step 5: Solve for x
    x = 3,411,783.36/2,082.90
  6. Step 6: Final answer
    x = 1,638.00

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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.