Home / 3,181.50-4,390.65-1,784.34

Finding the Fourth Proportional to 3,181.50, 4,390.65 and 1,784.34

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Solution

The fourth proportional to 3,181.50, 4,390.65 and 1,784.34 is: 2,462.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.50 : 4,390.65 = 1,784.34 : x
  2. Step 2: Convert to fraction form
    3,181.50/4,390.65 = 1,784.34/x
  3. Step 3: Cross multiply
    3,181.50x = 4,390.65 × 1,784.34
  4. Step 4: Simplify right side
    3,181.50x = 7,834,412.42
  5. Step 5: Solve for x
    x = 7,834,412.42/3,181.50
  6. Step 6: Final answer
    x = 2,462.49

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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.