Home / 2,113.81-2,917.42-1,230.14

Finding the Fourth Proportional to 2,113.81, 2,917.42 and 1,230.14

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Solution

The fourth proportional to 2,113.81, 2,917.42 and 1,230.14 is: 1,697.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,113.81 : 2,917.42 = 1,230.14 : x
  2. Step 2: Convert to fraction form
    2,113.81/2,917.42 = 1,230.14/x
  3. Step 3: Cross multiply
    2,113.81x = 2,917.42 × 1,230.14
  4. Step 4: Simplify right side
    2,113.81x = 3,588,822.85
  5. Step 5: Solve for x
    x = 3,588,822.85/2,113.81
  6. Step 6: Final answer
    x = 1,697.80

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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.