Home / 1,680.55-2,319.03-934.47

Finding the Fourth Proportional to 1,680.55, 2,319.03 and 934.47

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Solution

The fourth proportional to 1,680.55, 2,319.03 and 934.47 is: 1,289.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.55 : 2,319.03 = 934.47 : x
  2. Step 2: Convert to fraction form
    1,680.55/2,319.03 = 934.47/x
  3. Step 3: Cross multiply
    1,680.55x = 2,319.03 × 934.47
  4. Step 4: Simplify right side
    1,680.55x = 2,167,063.96
  5. Step 5: Solve for x
    x = 2,167,063.96/1,680.55
  6. Step 6: Final answer
    x = 1,289.50

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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.