Home / 3,181.61-4,390.59-1,784.36

Finding the Fourth Proportional to 3,181.61, 4,390.59 and 1,784.36

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Solution

The fourth proportional to 3,181.61, 4,390.59 and 1,784.36 is: 2,462.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.61 : 4,390.59 = 1,784.36 : x
  2. Step 2: Convert to fraction form
    3,181.61/4,390.59 = 1,784.36/x
  3. Step 3: Cross multiply
    3,181.61x = 4,390.59 × 1,784.36
  4. Step 4: Simplify right side
    3,181.61x = 7,834,393.17
  5. Step 5: Solve for x
    x = 7,834,393.17/3,181.61
  6. Step 6: Final answer
    x = 2,462.40

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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.