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Finding the Fourth Proportional to 1,674.72, 2,311.08 and 1,011.42

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Solution

The fourth proportional to 1,674.72, 2,311.08 and 1,011.42 is: 1,395.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,674.72 : 2,311.08 = 1,011.42 : x
  2. Step 2: Convert to fraction form
    1,674.72/2,311.08 = 1,011.42/x
  3. Step 3: Cross multiply
    1,674.72x = 2,311.08 × 1,011.42
  4. Step 4: Simplify right side
    1,674.72x = 2,337,472.53
  5. Step 5: Solve for x
    x = 2,337,472.53/1,674.72
  6. Step 6: Final answer
    x = 1,395.74

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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.