Home / 5,639.21-8,456.95-1,941.36

Finding the Fourth Proportional to 5,639.21, 8,456.95 and 1,941.36

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Solution

The fourth proportional to 5,639.21, 8,456.95 and 1,941.36 is: 2,911.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,639.21 : 8,456.95 = 1,941.36 : x
  2. Step 2: Convert to fraction form
    5,639.21/8,456.95 = 1,941.36/x
  3. Step 3: Cross multiply
    5,639.21x = 8,456.95 × 1,941.36
  4. Step 4: Simplify right side
    5,639.21x = 16,417,984.45
  5. Step 5: Solve for x
    x = 16,417,984.45/5,639.21
  6. Step 6: Final answer
    x = 2,911.40

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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.