Home / 5,320.33-7,981.33-1,621.70

Finding the Fourth Proportional to 5,320.33, 7,981.33 and 1,621.70

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Solution

The fourth proportional to 5,320.33, 7,981.33 and 1,621.70 is: 2,432.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320.33 : 7,981.33 = 1,621.70 : x
  2. Step 2: Convert to fraction form
    5,320.33/7,981.33 = 1,621.70/x
  3. Step 3: Cross multiply
    5,320.33x = 7,981.33 × 1,621.70
  4. Step 4: Simplify right side
    5,320.33x = 12,943,322.86
  5. Step 5: Solve for x
    x = 12,943,322.86/5,320.33
  6. Step 6: Final answer
    x = 2,432.80

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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.