Home / 1,861.65-2,565.66-1,808.34

Finding the Fourth Proportional to 1,861.65, 2,565.66 and 1,808.34

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Solution

The fourth proportional to 1,861.65, 2,565.66 and 1,808.34 is: 2,492.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.65 : 2,565.66 = 1,808.34 : x
  2. Step 2: Convert to fraction form
    1,861.65/2,565.66 = 1,808.34/x
  3. Step 3: Cross multiply
    1,861.65x = 2,565.66 × 1,808.34
  4. Step 4: Simplify right side
    1,861.65x = 4,639,585.60
  5. Step 5: Solve for x
    x = 4,639,585.60/1,861.65
  6. Step 6: Final answer
    x = 2,492.19

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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.