Home / 5,213.84-7,820.08-1,318.01

Finding the Fourth Proportional to 5,213.84, 7,820.08 and 1,318.01

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Solution

The fourth proportional to 5,213.84, 7,820.08 and 1,318.01 is: 1,976.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,213.84 : 7,820.08 = 1,318.01 : x
  2. Step 2: Convert to fraction form
    5,213.84/7,820.08 = 1,318.01/x
  3. Step 3: Cross multiply
    5,213.84x = 7,820.08 × 1,318.01
  4. Step 4: Simplify right side
    5,213.84x = 10,306,901.25
  5. Step 5: Solve for x
    x = 10,306,901.25/5,213.84
  6. Step 6: Final answer
    x = 1,976.84

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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.