Home / 3,364.55-5,045.08-1,978.31

Finding the Fourth Proportional to 3,364.55, 5,045.08 and 1,978.31

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Solution

The fourth proportional to 3,364.55, 5,045.08 and 1,978.31 is: 2,966.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,364.55 : 5,045.08 = 1,978.31 : x
  2. Step 2: Convert to fraction form
    3,364.55/5,045.08 = 1,978.31/x
  3. Step 3: Cross multiply
    3,364.55x = 5,045.08 × 1,978.31
  4. Step 4: Simplify right side
    3,364.55x = 9,980,732.21
  5. Step 5: Solve for x
    x = 9,980,732.21/3,364.55
  6. Step 6: Final answer
    x = 2,966.44

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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.