Home / 5,086.84-7,630.32-1,389.12

Finding the Fourth Proportional to 5,086.84, 7,630.32 and 1,389.12

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Solution

The fourth proportional to 5,086.84, 7,630.32 and 1,389.12 is: 2,083.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,086.84 : 7,630.32 = 1,389.12 : x
  2. Step 2: Convert to fraction form
    5,086.84/7,630.32 = 1,389.12/x
  3. Step 3: Cross multiply
    5,086.84x = 7,630.32 × 1,389.12
  4. Step 4: Simplify right side
    5,086.84x = 10,599,430.12
  5. Step 5: Solve for x
    x = 10,599,430.12/5,086.84
  6. Step 6: Final answer
    x = 2,083.70

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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.