Home / 2,161.54-2,983.05-1,230.18

Finding the Fourth Proportional to 2,161.54, 2,983.05 and 1,230.18

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Solution

The fourth proportional to 2,161.54, 2,983.05 and 1,230.18 is: 1,697.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.54 : 2,983.05 = 1,230.18 : x
  2. Step 2: Convert to fraction form
    2,161.54/2,983.05 = 1,230.18/x
  3. Step 3: Cross multiply
    2,161.54x = 2,983.05 × 1,230.18
  4. Step 4: Simplify right side
    2,161.54x = 3,669,688.45
  5. Step 5: Solve for x
    x = 3,669,688.45/2,161.54
  6. Step 6: Final answer
    x = 1,697.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.