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Finding the Fourth Proportional to 1,709.66, 2,555.11 and 1,248.41

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Solution

The fourth proportional to 1,709.66, 2,555.11 and 1,248.41 is: 1,865.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,709.66 : 2,555.11 = 1,248.41 : x
  2. Step 2: Convert to fraction form
    1,709.66/2,555.11 = 1,248.41/x
  3. Step 3: Cross multiply
    1,709.66x = 2,555.11 × 1,248.41
  4. Step 4: Simplify right side
    1,709.66x = 3,189,812.10
  5. Step 5: Solve for x
    x = 3,189,812.10/1,709.66
  6. Step 6: Final answer
    x = 1,865.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.