Home / 4,607.92-6,911.84-1,321.28

Finding the Fourth Proportional to 4,607.92, 6,911.84 and 1,321.28

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Solution

The fourth proportional to 4,607.92, 6,911.84 and 1,321.28 is: 1,981.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,607.92 : 6,911.84 = 1,321.28 : x
  2. Step 2: Convert to fraction form
    4,607.92/6,911.84 = 1,321.28/x
  3. Step 3: Cross multiply
    4,607.92x = 6,911.84 × 1,321.28
  4. Step 4: Simplify right side
    4,607.92x = 9,132,475.96
  5. Step 5: Solve for x
    x = 9,132,475.96/4,607.92
  6. Step 6: Final answer
    x = 1,981.91

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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.