Home / 3,319.84-4,981.20-1,587.34

Finding the Fourth Proportional to 3,319.84, 4,981.20 and 1,587.34

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Solution

The fourth proportional to 3,319.84, 4,981.20 and 1,587.34 is: 2,381.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,319.84 : 4,981.20 = 1,587.34 : x
  2. Step 2: Convert to fraction form
    3,319.84/4,981.20 = 1,587.34/x
  3. Step 3: Cross multiply
    3,319.84x = 4,981.20 × 1,587.34
  4. Step 4: Simplify right side
    3,319.84x = 7,906,858.01
  5. Step 5: Solve for x
    x = 7,906,858.01/3,319.84
  6. Step 6: Final answer
    x = 2,381.70

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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.