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Finding the Fourth Proportional to 2,373.71, 3,275.70 and 1,311.49

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Solution

The fourth proportional to 2,373.71, 3,275.70 and 1,311.49 is: 1,809.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,373.71 : 3,275.70 = 1,311.49 : x
  2. Step 2: Convert to fraction form
    2,373.71/3,275.70 = 1,311.49/x
  3. Step 3: Cross multiply
    2,373.71x = 3,275.70 × 1,311.49
  4. Step 4: Simplify right side
    2,373.71x = 4,296,047.79
  5. Step 5: Solve for x
    x = 4,296,047.79/2,373.71
  6. Step 6: Final answer
    x = 1,809.85

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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.