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Finding the Fourth Proportional to 2,313.40, 3,470.64 and 1,665.40

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Solution

The fourth proportional to 2,313.40, 3,470.64 and 1,665.40 is: 2,498.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,313.40 : 3,470.64 = 1,665.40 : x
  2. Step 2: Convert to fraction form
    2,313.40/3,470.64 = 1,665.40/x
  3. Step 3: Cross multiply
    2,313.40x = 3,470.64 × 1,665.40
  4. Step 4: Simplify right side
    2,313.40x = 5,780,003.86
  5. Step 5: Solve for x
    x = 5,780,003.86/2,313.40
  6. Step 6: Final answer
    x = 2,498.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.