Home / 4,320.40-6,481.62-1,398.70

Finding the Fourth Proportional to 4,320.40, 6,481.62 and 1,398.70

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Solution

The fourth proportional to 4,320.40, 6,481.62 and 1,398.70 is: 2,098.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,320.40 : 6,481.62 = 1,398.70 : x
  2. Step 2: Convert to fraction form
    4,320.40/6,481.62 = 1,398.70/x
  3. Step 3: Cross multiply
    4,320.40x = 6,481.62 × 1,398.70
  4. Step 4: Simplify right side
    4,320.40x = 9,065,834.90
  5. Step 5: Solve for x
    x = 9,065,834.90/4,320.40
  6. Step 6: Final answer
    x = 2,098.38

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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.