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Finding the Fourth Proportional to 1,786.71, 2,465.69 and 1,000.76

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Solution

The fourth proportional to 1,786.71, 2,465.69 and 1,000.76 is: 1,381.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786.71 : 2,465.69 = 1,000.76 : x
  2. Step 2: Convert to fraction form
    1,786.71/2,465.69 = 1,000.76/x
  3. Step 3: Cross multiply
    1,786.71x = 2,465.69 × 1,000.76
  4. Step 4: Simplify right side
    1,786.71x = 2,467,554.10
  5. Step 5: Solve for x
    x = 2,467,554.10/1,786.71
  6. Step 6: Final answer
    x = 1,381.06

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Double scale
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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.