Home / 1,803.20-2,705.94-981.99

Finding the Fourth Proportional to 1,803.20, 2,705.94 and 981.99

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Solution

The fourth proportional to 1,803.20, 2,705.94 and 981.99 is: 1,473.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,803.20 : 2,705.94 = 981.99 : x
  2. Step 2: Convert to fraction form
    1,803.20/2,705.94 = 981.99/x
  3. Step 3: Cross multiply
    1,803.20x = 2,705.94 × 981.99
  4. Step 4: Simplify right side
    1,803.20x = 2,657,206.02
  5. Step 5: Solve for x
    x = 2,657,206.02/1,803.20
  6. Step 6: Final answer
    x = 1,473.61

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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.