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Finding the Fourth Proportional to 1,756.48, 2,630.94 and 830.64

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Solution

The fourth proportional to 1,756.48, 2,630.94 and 830.64 is: 1,244.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,756.48 : 2,630.94 = 830.64 : x
  2. Step 2: Convert to fraction form
    1,756.48/2,630.94 = 830.64/x
  3. Step 3: Cross multiply
    1,756.48x = 2,630.94 × 830.64
  4. Step 4: Simplify right side
    1,756.48x = 2,185,364.00
  5. Step 5: Solve for x
    x = 2,185,364.00/1,756.48
  6. Step 6: Final answer
    x = 1,244.17

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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.